Question

A bulb of resistance 1 ohm is connected across a battery of 10 V. Find the power consumed.

• A. 10 W
• B. 100W
• C. 0.1 W
• D. 0.01W

Answer 1

The correct option is B 100W

Given, resistance, $R=1\Omega$ and voltage, $V=10V$
Let $P$ be the power consumed.
We know, $P=\frac{V^2}{R}=\frac{{10}^2}{1}=100W$