2. (b) What current flows from the battery ? What is (a) the highest (b) the lowest total resistance that can be secured by combination of four coils of resistances 4 , 8 , 12 , 24 ? justify your answer. nswer: Answer: Question 2. (ii) a 4 V battery in parallel with 12 and 2 resistors. (a) material of the wire Potential difference In an electric circuit carrying current, the work done to move a unit charge from one point to the other is called potential difference. (i) length of conductor (l) If the voltmeter or charger indicate that the battery is bad or the vehicle wont start, there may be other issues to resolve or the battery may need to be replaced. The sensitivity of a standard 100 sensor is a nominal 0.385 /C. Answer. (a) volt is the resistance at temperature T, They can be almost as durable as a thermocouple. Rudolf II, Holy Roman Emperor was believed to be the owner. In circuit II, the current flows and hence 2V. These batteries come as Gel Cell or Absorbed Glass Mat batteries and are less common in cars unless purchased as an after-market modification. (b) If the four parts are placed in parallel, how will be the resistance of the combination compare with the resistance of the original wire? (b) ammeter and resistor (c) 0.05 V Question 38: Answer: H1 = I2R1t = (1.167)2 3 60 = 245.14 J The electrical resistivity of few material is given below in ohm-metre. (d) 25 W (d) Voltmeter, Ammeter and Rheostat. Question 36: Answer: .. Why ? Question 5: On passing electricity through tungsten filament, its temperature reaches to 2700C and it gives heat and light energy without being melted. and their Locator. In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. = 1200 x \(\frac { 10 }{ 60 }\) = 200 Wh 60 Energy used by 250 W TV set in 1 hour = 250 W x 1 h = 250 Wh Equivalent resistance Rp of the three appliances connected in parallel, is Calculate resistance of a given resistor by formula \(R=\frac { V }{ I }\). Should the resistance of an ammeter be low or high? The SI unit of resistance of a wire is Question 1: http://www.carsdirect.com/car-maintenance/4-tips-for-recharging-a-car-battery, http://www.meineke.com/blog/jump-start-car-battery-right-way/, http://www.firestonecompleteautocare.com/maintain/batteries/type-group-size/, http://www.pepboys.com/parts/batteries/diy_charging/, https://www.pepboys.com/parts/batteries/diy_charging/, http://www.carsdirect.com/car-maintenance/car-battery-or-alternator-how-to-tell-where-the-problem-lies, http://www.dummies.com/how-to/content/troubleshooting-a-car-that-wont-start.html, (Charge a Car Battery). Question 2. Current whose magnitude and direction does not vary with time. Least count of voltmeter = 1/20 = 0.05 V, Question 6. Question 11 What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series ? With the help of a diagram, derive the formula for the equivalent resistance of three resistances connected in series. (b) Total potential difference, V = 6 V Suppose the ammeter (or voltmeter) you are using in this experiment do not have positive (+) and negative (-) terminal markings. (b) 2:1 Sometimes one of my meters will start giving a reading that Question 5: If you are unsure where your battery is located, check the owners manual for your vehicle. Let V1, V2 and V3 be the potential difference across the resistances R1, R2 and R3 respectively. The electrical resistivity of silver is 1.60 10-6 m. What will be the resistance of a silver wire of length 10 m and cross-sectional area 2 10-3 m2? (a) The highest resistance is secured by combining all four coils of resistance in series. [CCE 2010] C. the resistors IT and R2 were not correctly connected in parallel. Thanks to all authors for creating a page that has been read 708,458 times. (e) Why are copper and aluminum wires usually employed for electricity transmission? 1.5 GHz - 3.8 GHz Class-E pHEMT Power Amplifier River cruise giant Viking this week announced plans for new Mississippi River sailings that feature a rare treat for Elvis Presley fans: A private, after-hours tour of Graceland.. With Viking River Cruises you have your choice of fascinating places to visit, with river tours to Europe, China and Russia! Open circuit: A discontinuous circuit through which no current can flow. Question 7. Answer: Power, P = V I = 220 x 5 = 1100 W If the flow of current exceeds the specified preset value due to some reason, the heat produced melts it and disconnects the circuit or the device from the mains. (ii) Many labs are already trying to minimize their environmental impact by reducing energy consumption, recycling, and implementing waste sorting processes to ensure correct disposal. (a) In order to get 4 , resistance 2 should be connected in series with the parallel combination of 3 and 6 . Resistance. Find the voltmeter reading for the circuits A and B shown below. List the factors on which the resistance of a conductor in the shape of a wire depends. Answer: (d) ammeter and voltmeter. For doing this, he should change the B 1.60 10-8 m Calculate (a) the total resistance of the circuit, (b) the current through the circuit, and (c) the potential difference across the electric conductor. A potential difference V is applied across a conductor of length l and diameter D. How is the resistance R of the conductor affected, when (i) V is halved (ii) l is halved and (iii) D is doubled. A. (b) Position of voltmeter is incorrect (a) I2R SI unit ohm Electricity Class 10 Notes, Explanation with Video, Question Answers . Dividing (ii) by (i), we get R = \(\frac{R}{4}\) An electric lamp, whose resistance is 20 , and a conductor of 4 resistance are connected to aft V battery (Fig.). (a) 0 V in both the circuits What will you infer if the deflection takes place in opposite direction? The UPRT elements are wound from reference-grade platinum wire. (d) In both circuits I and II, 0.1 A The resistance of an alloy When electric current passes through a very thin, high resistance tungsten filament of an electric bulb, the filament becomes white hot and emits light. Note: Tables 2, 3 and 4 indicate general aging trends of common cobalt-based Li-ion batteries on depth-of-discharge, temperature and charge levels, Table 6 further looks at capacity loss when operating within given and discharge bandwidths. Mississippi River Cruises Stretching for 2,350 miles down the United States, from Minnesota's Lake Itasca to the Gulf of Mexico, our new cruises on the "Mighty Mississippi" offer a different type of cross-country journey for the curious explorerone that allows Viking just announced the opening to the public of reservations for the companys new Mississippi River Cruises set to launch in August 2022. The four-wire resistance configuration increases the accuracy of measurement of resistance. Measuring voltage (potential difference) V. ab. Answer: Resistance of series conductor, R2 = 4 W The better way of connecting lights and other electrical appliances in domestic wiring is parallel connection because of the following advantages: Question 4. Siemens RTD rapidly fell out of favour due to the instability of the temperature reading. (b) no reading in either the ammeter or the voltmeter (d) variable resistance. Therefore, P = I2 R = (15)2 x 8 = 1800 Js-1. (a) (i) Potential difference across each device remain same whereas in series connections, it gets distributed. To find: (a) R2 Define the following terms: (c) 0.050 V Since all the resistors are in series, the same current, 0.67 A flows through the 12 resistor. (d) resistor and voltmeter. (d) becomes four times, Question 13: [CCE 2011] Electric power determines the rate at which energy is delivered by a current. Viking Mississippi boat cruises on Mississippi River with departures from homeports NOLA-New Orleans, Memphis TN, St Louis MO, and Minneapolis-Saint Paul MN. (b) In (A) as only cell is in circuit, therefore, voltmeter reads minimum emf. The graph between V and I for the given data is shown below: Give reason. (b) 330 mA (a) The voltmeter should have very high resistance so that it doesnt allow current to flow through it and thus change the currents in the rest of the circuit. Question 2 The ammeter should be connected in series with the resister such that the current enters at the positive terminal and leaves at the negative terminal of the ammeter. The resistance of a conductor depends (i) on its length (ii) on its area of cross-section and (iii) on the nature of its material. When parallel resistors are of three different values, the potential difference across its terminals is [CCE 2015] Why does the cord of an electric heater not glow while the heating element does? V = IR Resistance of a conductor depends upon: (b) \(\frac { 1 }{ 5 }\) Give reasons. One volt is the potential difference between two points in an electric circuit when one joule of work is done to move a charge of one coulomb from one point to the other. Mike Parra is a Master Mechanic in Arizona. nswer: (d) Resistor, Question 18: Question 16: A student arranges the following circuit to get equivalent resistance of a series combination of two resistors R1 and R2. (b) The voltmeter should be connected across the components of and R2 to give correct reading for potential difference. 0 0 Similar questions Using Kirchhoff's rules determine the value of unknown resistance R in the circuit so that no current flows through 4 resistance. Note the reading in the ammeter I, for the current and reading of the voltmeter V for the potential difference across the nichrome wire XY in the circuit. Answer: The resistance of a wire depends on Answer: It is measured by an instrument called the voltmeter. It does not describe the social relationship between employees within a class, such as the relationship between researchers. "At a time where many of us are at home, looking for inspiration to travel in the future, I am pleased to introduce a new, modern way to explore this great river," Viking's chairman, Torstein Hagen, said in a statement . The disposal of chemically/biologically contaminated waste requires a lot of energy. Raman always switched off lights, fans and electric gadgets when not in use. I was looking to load a file from an URL and here is what I came up with: util: from openpyxl import load_workbook from io import BytesIO import urllib def load_workbook_from_url(url): file = urllib.request.urlopen(url).read() return load_workbook(filename = BytesIO(file)) If the battery doesnt hold a charge or dies again shortly after you charge it, take it to an auto parts store and have it tested to see if you need a new one. Potential difference, V = 9 V Answer: Activity 12.2. (iii) According to Ohms law, The educational background of the researchers and their socialization process. an ammeter and a plug key, all connected in series. From Ohms law, we get H = VIt joules = v2t/R joules. Question 9. Ensure the surface you place the charger on is sturdy and stationary to prevent it from falling or disconnecting from the battery. In the circuit given below the voltmeter and ammeter readings are respectively Heat generated, H = VQ = 50Vx 96,000 C = 48,00,000 J = 4.8 x 106 J, Question 3 When all the three bulbs glow, a current of 3A is recorded by the ammeter, NCERT Solutions for Class 10 Foundation of IT, Chapter 1 Chemical Reactions and Equations, Chapter 5 Periodic Classification of Elements, Chapter 10 Light Reflection and Refraction, Chapter 13 Magnetic Effects of Electric Current, Chapter 16 Management of Natural Resources, Electricity Class 10 Science NCERT Solutions, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 12 Electricity, NCERT Solutions for Class 10 ScienceChapter 1, NCERT Solutions for Class 10 ScienceChapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 ScienceChapter 7, NCERT Solutions for Class 10 ScienceChapter 8, NCERT Solutions for Class 10 ScienceChapter 9, NCERT Solutions for Class 10 ScienceChapter 10, NCERT Solutions for Class 10 ScienceChapter 11, NCERT Solutions for Class 10 ScienceChapter 12, NCERT Solutions for Class 10 ScienceChapter 13, NCERT Solutions for Class 10 ScienceChapter 14, NCERT Solutions for Class 10 ScienceChapter 15, NCERT Solutions for Class 10 ScienceChapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10, Electric Potential And Potential Difference, Factors On Which The Resistance Of A Conductor Depends. Answer: Viking just announced more river cruises are coming to the Mississippi in 2023. Question 4: V2 = IR2 = 0.25 A 4 = 1 V. Question 5. Find the value of the resistance of the resistor. (a) Reading = Least count x Division of reading. [18] Significant impact can be achieved by keeping the opening height as low as possible when working and keeping them closed when not in use. It means there is: (b) Silver is the best conductor as it has least resistivity. Resistance of water filter, R3 = 500 You may need to clean the terminals on both batteries to ensure a strong connection. Answer: Answer: Answer: [I in series remains constant.] Heating may change the resistance of resisters. Question 2: In summary, differences in attitude among members of the laboratory are explained by social organization: A person's attitudes are intimately related to the role they have in an organization. Laboratory services are provided in a variety of settings: physicians' offices, clinics, hospitals, and regional and national referral centers.[1]. Why? (a) damage of instrument \(R=\frac { V }{ I }\). Use the full length of the cables to separate the battery from the charger as much as you can. (2003). In this case same current flows through each resistance but potential difference in the ratio of resistance, Parallel Grouping of Resistances Through ethnographic studies, one finding is that, among the personnel, each class (researchers, administrators) has a different degree of entitlement, which varies per laboratory. Answer: Question 4. Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. (i) We can get a total resistance of 4 by connecting the 2 resistance in series with the parallel combination of 3 and 6. Answer: (b) For the circuit, shown in this diagram, Answer: Electricity Class 10 Here is a Complete Explanation and Notes of Class 10 Science Chapter 12 Electricity. (i) Resistivity of the material. (d) Voltmeter used in the circuit Question 12: Answer: Solution: American Queen Steamboat Company Viking is coming to the Mississippi with is beautifully designed Viking Mississippi!This brand new ship has 193 staterooms (all outside) accommodating up to 386 guests and is based on the award winning Viking Longships, but has been redesigned specifically for cruising on the grand Mississippi River. The equivalent resistance is, (ii) When we connect a series combination of R1 and R2 in parallel with R3, as shown in Fig. HF 30W Quasi-Complementary Class-D Power Amplifier. Make sure there are no children in the area while you work on the battery of a vehicle as sparks could fly if positive and negative cables come into contact with one another. "I learned a lot. (a) 0.01A Potential difference (V) = 220 V. Question 16 Their attitude depended on how that job viewed their badge from a standpoint of utility, (how is the badge useful for my job) morality (what are my morals on privacy, as it relates to being tracked by this badge) and relations (how will I be seen by others if I refuse to wear this badge). (iii) the voltage across 7 resistor (d) rheostat. Here, current, I = 5 A, voltage, V = 220 V While the rest of bulbs in parallel circuit will continue to glow without getting disturbed because in parallel combination, current gets additional paths to flow. (v) Why are copper and aluminium wires usually employed for electricity transmission? Save my name, email, and website in this browser for the next time I comment. Lakhmir Singh Physics Class 10 Solutions Page No:12. Current should be passed through the circuit for a short time while taking observations; otherwise current would cause unnecessary heating in the circuit. (b) Suggest any two methods of saving electricity, answer: Question 43: Not every object in a lab is contaminated, but often ends up in the contaminated waste, driving up energy costs for waste disposal. H t Wire of special type of alloy like manganin, Eureka, nichrome, etc. Dividing eq. Two common calibration methods are the fixed-point method and the comparison method. For the two students, the value of the emf used by student (A) and the resistance due to the rheostat Question 1 What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series ? As a result, the "American standard" is hardly the standard even in the US. If the current passing through a conductor is doubled, what will be the change in the heat produced? Question 31: What does an electric circuit mean ? (b) 5 (c) 7.5 V T Cruises on the Mississippi River (2019 update) Mississippi River cruise itineraries are usually separated into the Upper and Lower part of the river. Build circuits with batteries, resistors, ideal and non-Ohmic light bulbs, fuses, and switches. The equivalent resistance in series combination is greater than the individual resistances. Least count of ammeter = \(\frac { { A }_{ R } }{ { A }_{ N } }\)= .. ampere. Give reason why metals are good conductors, whereas non-metals are bad conductors of electricity. MgO is used due to its dielectric constant, rounded grain structure, high-temperature capability, and its chemical inertness. Here, I = 5 A, V = 220 V, t = 2h = 7,200 s Applied voltage, V = 220 V Draw a vertical line from any point on the V axis such as to cut the graphs 1, 2 and 3 at points P, Q and R as shown in the graph below. they will glow continuously as they were glowing before. Direct current source of electromotive force. (ii) It has high melting point and does not oxidise. You will find that all the reading obtained are same. Question 7. (iv) For series combination of resistances, Question 2: (a) number of cells used Staff members feel ill at ease when changing patterns of entitlement, obligation, respect, informal and formal hierarchy, and more. Answer: The current flowing through a resistor connected in an electric circuit and potential difference developed across its ends are shown in the diagram. What would be the reading of ammeter and voltmeter in the given circuit ? 1 KW = 103W 1 MW = 106W Which one of these graphs represents the series combination of the other two? Question 42: (b) It gives correct reading for current I but incorrect reading for potential difference V (ii) a 4 V battery in parallel with 12 and 2 resistors. (c) (i) All appliances do not get same potential in series arrangement. In which combination will the potential difference across R1 and across R2 be the same and in which combination will the current through R1 and through R2 be the same? Now I can charge my car batteries without my boyfriend's help. Another classification of laboratory PRTs is Standard Platinum Resistance Thermometers (Standard SPRTs). How much does the resistance change if the diameter is doubled ? I = \(\frac { Q }{ t }\) or 1 A = I C s-1, Question 3 (b) becomes double (a) As R l, when the wire is cut into four equal pieces, the resistance of each part is \(\frac{R}{4}\) (i) a 6 V battery in series with 1 and 2 resistors, and (c) The ON switch will interfere in correct readings as some current will keep flowing. Then, plug the charger in and turn it on. Answer: (c) In circuit I, 0.1 A and in II, 1.0 A The Locator does not want to disclose information that could jeopardize his relationship with the members of staff. (a) remains unchanged (d) 0.1 A. (c) 0.1 989-995, Learn how and when to remove this template message, "On the Increase of Electrical Resistance in Conductors with Rise of Temperature, and Its Application to the Measure of Ordinary and Furnace Temperatures; Also on a Simple Method of Measuring Electrical Resistances", "Standard Platinum Resistance Thermometer Calibrations from the Ar TP to the Ag FP", https://www.punetechtrol.com/product/resistance-temperature-detector-rtd, "Hand Held Thermometers | Charnwood Instruments", "Omega Engineering | Shop for Sensing, Monitoring and Control Solutions with Technical Expertise", https://en.wikipedia.org/w/index.php?title=Resistance_thermometer&oldid=1119731789, Articles needing cleanup from September 2022, Articles with bare URLs for citations from September 2022, All articles with bare URLs for citations, Articles covered by WikiProject Wikify from September 2022, All articles covered by WikiProject Wikify, All Wikipedia articles written in American English, Articles with unsourced statements from May 2022, Articles with unsourced statements from February 2016, Wikipedia articles needing clarification from May 2022, Articles with unsourced statements from September 2014, Articles with unsourced statements from December 2014, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 3 November 2022, at 03:35. (iii) When the two coils are connected in parallel. Answer: Working on CBSE class 10 physics electricity questions and answers will help candidates to score good marks in-class tests as well as in the CBSE Class 10 board exam. Question 12. (a) wrong connections Therefore, smaller is the resistance of the conductor. Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. 1 electron = 1.6 x 10-19C. V = IR Viking Mississippi. Answer: Calculate the potential difference between the two terminals of a battery if 100 joules of work is required to transfer 20 coulombs of charge from one terminal of the battery to the other. Let R1, R2 and R3 be the three resistances connected in parallel combination between points C and D and let Rp be their equivalent resistance. To use a public class method, you just need the class. Connections should be made as per the circuit. Current whose magnitude and direction periodically changes with time. (b) 2 : 1 What is meant by least count of an instrument? Question 6: (d) least across the smallest resistance Why are alloys commonly used in electric heating devices? Answer: In a circuit ammeter is always connected in series and voltmeter is connected in parallel across the points between which potential difference is to be measured. Professor of Natural Philosophy at the University of Glasgow for 53 years, he did important work in the mathematical analysis of electricity and formulation of the first and second laws of [CBSE2018] 1.8 MHz - 30 MHz 25W Power Amplifier FET - K9AY. They are constructed like the UPRT, but the materials are more cost-effective. Commercial platinum grades exhibit a temperature coefficient of resistance 0.00385/C (0.385%/C) (European Fundamental Interval). A piece of wire of resistance R is cut into five equal parts. Relation of resistance is given by, R = \(\frac{l}{A}\), (b) Given, P = 4 kW = 4000 W and V = 220 V The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below: Plot a graph between V and I and calculate the resistance of the resistor. Viking River Cruises - Mississippi River Cruises - If you have always wanted to take a cruise, what are you waiting for? Before a public instance method may be invoked and executed, an instance must be created of the class to which it belongs. On increasing the length of the resistor its resistance increases. The value of the resistance of the resistor is [CCE2013] "The most helpful tip was that the negative pole must be first connected before the positive.". But he did not succeed to achieve the objective. The American Fundamental Interval is 0.00392/C,[8] based on using a purer grade of platinum than the European standard. (d) joule, Question 5: (c) 1:4 MIT[22] and the university of Edingburgh. Resistance of toaster, R2 = 50 CBSE Class 10 Science Practicals Lab Manual MCQ nswers: Physics Lab Manual CBSE Class 10 Scoring Key With Explanation, NCERT Exemplar Problems Class 7 Maths Exponents and Powers, NCERT Exemplar Class 7 Maths Practical Geometry Symmetry and Visualising Solid Shapes, NCERT Exemplar Class 7 Maths Algebraic Expression, NCERT Solutions for Class 11 Maths Chapter 8 Binomial Theorem Ex 8.2, NCERT Exemplar Problems Class 7 Maths Perimeter and Area, NEET Physics Chapter Wise Mock Test General properties of matter, ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 6 Factorization MCQS, NCERT Exemplar Class 7 Maths Rational Numbers, NCERT Exemplar Class 10 Maths Solutions Chapter 13 Statistics and Probability, NCERT Exemplar Class 10 Maths Solutions Chapter 12 Surface Areas and Volumes. Question 28: Solution: R = \(\frac{l}{A}\) nswer: RTD assemblies made from iron or copper are also used in some applications. Last Updated: March 13, 2021 (b) Equivalent resistance of two resistors 3.5 and 1 in both the circuits I and II is R = 3.5 + 1 = 4.5 On what factors does the resistance of a conductor depend And PR = 3 1 = 2 ampere Question 18. Viking River Cruises - 2022 Mississippi River Cruises Stretching for 2,350 miles, from Minnesota's Lake Itasca to the Gulf of Mexico, these new cruises on the "Mighty Mississippi" offer a different type of cross-country journey for the curious explorer one that Viking Mississippi river cruise ship Sneak peek at artist renderings of the river ships interior spaces. Joules heating law The area of cross-section of the resistor\(\left( R\propto \frac { 1 }{ A } \right)\). Question 22: When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. nswer: Applied Voltage, V = 220 V An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be : An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be In parallel circuits, each electrical appliance gets the same voltage (220 V) as that of the power supply line. Substances having comparatively high electrical resistance are called resistors. MgO is used to isolate the conductors from the external sheath and from each other. The value of R is found to be same and constant in all three readings. Laboratory equipment refers to the various tools and equipment used by scientists working in a laboratory: The classical equipment includes tools such as Bunsen burners and microscopes as well as specialty equipment such as operant conditioning chambers, spectrophotometers and calorimeters. It is the resistance of the conductor of that substance of unit length and unit area of cross section. Viking is coming to the Mississippi! Power of first lamp (P1) = 100 W The unit of electric current is Question 7: R1 + R2 = 9 or R2 = 9 R1 = 9 6 Answer: {\displaystyle R_{0}} (a) It gives incorrect reading for current I as well as potential difference V (c) rheostat and ammeter Lakhmir Singh Physics Class 10 Solutions Page No: 66. Question 2: Compare the power used in the 2 resistor in each of the following circuits \(\frac{V}{I}\) = R The simplest resistance-thermometer configuration uses two wires. Why are copper and aluminium wires usually employed for electricity transmission? Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes? Total resistance of the circuit = R Under construction in Louisiana sun peek over golden trees capacity of the river! (c) 0.1A and from P along Y-axis, which meet at point R. A platinum wire or film is supported on a former in such a way that it gets minimal differential expansion or other strains from its former, yet is reasonably resistant to vibration. (c) 8 Show how you would connect three resistors, each of resistance 6 , so that the combination has a resistance of (i) 9 , (it) 4 .
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