Explanation Given Information: The emf across the battery is 9.20 V , the value of internal resistance is 1.20 Ω , the load resistance across the battery is R , the power across the battery is 21.2 W . The circuit for the situation is shown in figure. Formula to calculate the current acoss the circuit is, I = ε R + r (1) Here, I is the current acoss the circuit. ε is the emf across the battery. R is the load resistance across the battery. r is the internal resistance across the battery. Substitute 9.20 V for ε , 1.20 Ω for r in equation (1) to find I , I = 9.20 V R + 1.20 Ω Formula to calculate the power across the battery is, P = I 2 R (2) Here, P is the power across the battery

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN: 9781133104261

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Chapter 21, Problem 70P

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The reason for which the following situation is impossible.

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Chapter 21 Solutions

Principles of Physics: A Calculus-Based Text

Ch. 21.1 - Consider positive and negative charges moving...Ch. 21.2 - Prob. 21.2QQ Ch. 21.2 - When does an incandescent lightbulb carry more...Ch. 21.5 - For the two incandescent lightbulbs shown in...Ch. 21.7 - Prob. 21.5QQ Ch. 21.7 - With the switch in the circuit of Figure 21.18a...Ch. 21.7 - Prob. 21.7QQ Ch. 21.9 - Consider the circuit in Figure 21.29 and assume...Ch. 21 - If the terminals of a battery with zero internal...Ch. 21 - Wire B has twice the length and twice the radius...

Ch. 21 - The current-versus-voltage behavior of a certain...Ch. 21 - Prob. 4OQ Ch. 21 - A potential difference of 1.00 V is maintained...Ch. 21 - Prob. 6OQ Ch. 21 - A metal wire of resistance R is cut into three...Ch. 21 - The terminals of a battery are connected across...Ch. 21 - Prob. 9OQ Ch. 21 - Two conducting wires A and B of the same length...Ch. 21 - When resistors with different resistances are...Ch. 21 - When operating on a 120-V circuit, an electric...Ch. 21 - Prob. 13OQ Ch. 21 - Prob. 14OQ Ch. 21 - In the circuit shown in Figure OQ21.15, each...Ch. 21 - Prob. 1CQ Ch. 21 - Prob. 2CQ Ch. 21 - Prob. 3CQ Ch. 21 - Referring to Figure CQ21.4, describe what happens...Ch. 21 - When the potential difference across a certain...Ch. 21 - Use the atomic theory of matter to explain why the...Ch. 21 - Prob. 7CQ Ch. 21 - (a) What advantage does 120-V operation offer over...Ch. 21 - Prob. 9CQ Ch. 21 - Prob. 10CQ Ch. 21 - If you were to design an electric heater using...Ch. 21 - Prob. 12CQ Ch. 21 - Prob. 13CQ Ch. 21 - Prob. 14CQ Ch. 21 - Why is it possible for a bird to sit on a...Ch. 21 - Prob. 1P Ch. 21 - Prob. 2P Ch. 21 - The quantity of charge q (in coulombs) that has...Ch. 21 - Prob. 4P Ch. 21 - Prob. 5P Ch. 21 - Figure P21.6 represents a section of a conductor...Ch. 21 - Prob. 7P Ch. 21 - A 0.900-V potential difference is maintained...Ch. 21 - Prob. 9P Ch. 21 - A lightbulb has a resistance of 240 when...Ch. 21 - Prob. 11P Ch. 21 - Prob. 12P Ch. 21 - While taking photographs in Death Valley on a day...Ch. 21 - Prob. 14P Ch. 21 - If the current carried by a conductor is doubled,...Ch. 21 - Prob. 16P Ch. 21 - Prob. 17P Ch. 21 - Prob. 18P Ch. 21 - Prob. 19P Ch. 21 - Prob. 20P Ch. 21 - Prob. 21P Ch. 21 - Prob. 22P Ch. 21 - Prob. 23P Ch. 21 - Prob. 24P Ch. 21 - A 100-W lightbulb connected to a 120-V source...Ch. 21 - Prob. 26P Ch. 21 - Prob. 27P Ch. 21 - Prob. 28P Ch. 21 - A toaster is rated at 600 W when connected to a...Ch. 21 - Prob. 30P Ch. 21 - Prob. 31P Ch. 21 - Review. A well-insulated electric water heater...Ch. 21 - A battery has an emf of 15.0 V. The terminal...Ch. 21 - Two 1.50-V batterieswith their positive terminals...Ch. 21 - An automobile battery has an emf of 12.6 V and an...Ch. 21 - Prob. 36P Ch. 21 - Prob. 37P Ch. 21 - Prob. 38P Ch. 21 - Consider the circuit shown in Figure P21.39. Find...Ch. 21 - Four resistors are connected to a battery as shown...Ch. 21 - Three 100- resistors are connected as shown in...Ch. 21 - Prob. 42P Ch. 21 - Calculate the power delivered to each resistor in...Ch. 21 - Prob. 44P Ch. 21 - The ammeter shown in Figure P21.45 reads 2.00 A....Ch. 21 - Prob. 46P Ch. 21 - The circuit shown in Figure P21.47 is connected...Ch. 21 - In Figure P21.47, show how to add just enough...Ch. 21 - Taking R = 1.00 k and = 250 V in Figure P21.49,...Ch. 21 - For the circuit shown in Figure P21.50, we wish to...Ch. 21 - In the circuit of Figure P21.51, determine (a) the...Ch. 21 - Jumper cables are connected from a fresh battery...Ch. 21 - Prob. 53P Ch. 21 - Prob. 54P Ch. 21 - Prob. 55P Ch. 21 - Prob. 56P Ch. 21 - In the circuit of Figure P21.57, the switch S has...Ch. 21 - Prob. 58P Ch. 21 - The circuit in Figure P21.59 has been connected...Ch. 21 - Assume that global lightning on the Earth...Ch. 21 - Prob. 61P Ch. 21 - Prob. 62P Ch. 21 - Prob. 63P Ch. 21 - Prob. 64P Ch. 21 - Prob. 65P Ch. 21 - An oceanographer is studying how the ion...Ch. 21 - The values of the components in a simple series RC...Ch. 21 - Prob. 68P Ch. 21 - Prob. 69P Ch. 21 - Prob. 70P Ch. 21 - The student engineer of a campus radio station...Ch. 21 - Prob. 72P Ch. 21 - A battery has an emf and internal resistance r. A...Ch. 21 - Prob. 74P Ch. 21 - Prob. 75P Ch. 21 - Prob. 76P Ch. 21 - Prob. 77P

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The reason for which the following situation is impossible.

Solution Summary: The author explains that the following situation is impossible because the value of load resistance across the battery is less than the internal resistance.

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Chapter 21 Solutions