Answered: Two batteries supply current to the…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 94AP: (a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a...

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Question

Two batteries supply current to the circuit in the figure. The figure shows the potential difference across two of the resistors and the value of the third resistor.

3.0 V
4.5 V
3.5 V
ww
I
m
ww
2.0 V
ww
150 Q

Expert Solution

Step 1

Let the current I is flowing to the circuit

and hence all the resistances are connected in series so the current through all the resistors will be the same so writing the KVL in the loop we get

$4.5 + 3.0 = 3.5 + 150 \times I + 2 I = \frac{2.0}{150} = 0.0133 A = 133 m A$

So the current flowing through the circuit will be 133mA.

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what current is supplied by the batteries?

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