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Electricity and Magnetism

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Resistance of a Component in a Simple Circuit: $V$ vs. $I$

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Figure 1 depicts a simple circuit consisting of a power supply outputting a potential $V$, a current meter (having zero resistance) measuring a current $I$, and a resistor.

Figure 1. Timothy Black. Created for Albert.io. Copyright 2016. All rights reserved.

Figure 2 shows the potential $V$ as a function of the current $I$ through the circuit.

Figure 2. Timothy Black. Created for Albert.io. Copyright 2016. All rights reserved.

What is the resistance $R$ of the resistor?

A

$R = 6.40 \ \Omega$

B

$R = 1.56 \times 10^{-4}\ \Omega$

C

$R = 6400 \ \Omega$

D

$R = 0.156 \ \Omega$