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Back to 20.2 Ohm’s Law: Resistance and Simple Circuits

20.2 Exercise 10

Avg difficulty 2.5

(a) Find the voltage drop in an extension cord having a 0.0600-Ω0 . \text{0600}- \Omega resistance and through which 5.00 A is flowing. (b) A cheaper cord utilizes thinner wire and has a resistance of 0.300Ω0 . \text{300} \Omega. What is the voltage drop in it when 5.00 A flows? (c) Why is the voltage to whatever appliance is being used reduced by this amount? What is the effect on the appliance?

OpenStax College Physics 2e, 20.2 Ohm’s Law: Resistance and Simple Circuits, exercise 10

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.