Answered: 15 Q R, R, R, R. eq 12 V 12 Q

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter8: Capacitance

Section: Chapter Questions

Problem 71AP: (a) How much energy is stored in the electrical fields in the capacitors (in total) shown below? (b)...

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Question

Regarding the circuit in the left-hand part of the diagram:

a) What is the current passing through each of the resistors?

b) What is the current supplied by the battery?

c) What is the potential difference across the 12 Ω resistor?

d) How much power is turned to heat in the 4 Ω resistor?

e) If we replace the circuit on the left by the one in the right-hand part of the diagram, with the same battery and only one resistor, what resistance Req should we choose to obtain the same total current?

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