A device with a resistance of $200.0 \mathrm { k } \Omega$ is connected to a $10.0 - \mathrm { V }$ battery. How much power does the device use?
A)0.50 mW
B)20,000 kW
C)0.050 mW
D)2000 kW

Question

Quizplus · Accepted Answer

The power used by the device can be calculated using the formula $ P = \frac{V^2}{R} $. Substituting the given values, $ P = \frac{10^2}{200,000} = 0.0005 $ W, which is 0.50 mW.

A Device with a Resistance Of 200.0kΩ200.0 \mathrm { k } \Omega200.0kΩ

A Device with a Resistance Of $200.0 \mathrm { k } \Omega$