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 $ P $ 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 200.0kΩ 200.0 \mathrm{k}{\Omega}200.0kΩ Is Connected to A

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