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Physics / Physics with MasteringPhysics 4 / Chapter 21 / Problem 51P

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

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The circuit in Figure 21-32 includes a battery with a

Chapter 21, Problem 51P

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QUESTION:

The circuit in Figure 21–32 includes a battery with a finite internal resistance, \(r=0.50 \Omega\).

(a) Find the current flowing through the \(7.1-\Omega\) and the \(3.2-\Omega\) resistors.

(b) How much current flows through the battery?

(c) What is the potential difference between the terminals of the battery?

Equation Transcription:

$r=0.50\ \Omega{}$

$7.1\ -\Omega{}$

$3.2-\Omega{}$

$1.0\ \Omega{}$

$4.5\ \Omega{}$

$5.8\ \Omega{}$

$r\ 12.0\ V$

Text Transcription:

r=0.50 \Omega

7.1 - \Omega

3.2-\Omega

1.0 \Omega

4.5 \Omega

5.8 \Omega

r 12.0 V

Questions & Answers

QUESTION:

The circuit in Figure 21–32 includes a battery with a finite internal resistance, \(r=0.50 \Omega\).

(a) Find the current flowing through the \(7.1-\Omega\) and the \(3.2-\Omega\) resistors.

(b) How much current flows through the battery?

(c) What is the potential difference between the terminals of the battery?

Equation Transcription:

$r=0.50\ \Omega{}$

$7.1\ -\Omega{}$

$3.2-\Omega{}$

$1.0\ \Omega{}$

$4.5\ \Omega{}$

$5.8\ \Omega{}$

$r\ 12.0\ V$

Text Transcription:

r=0.50 \Omega

7.1 - \Omega

3.2-\Omega

1.0 \Omega

4.5 \Omega

5.8 \Omega

r 12.0 V

ANSWER:

Step 1 of 6

To determine the current that is drawn from the battery, we must first find the equivalent resistance of the entire circuit. current through the battery can be used to find the potential drop across the internal resistance and hence the potential across the terminals of the battery by using Ohm’s Law.

We can find the

Given values are

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