n electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be:A 100 W B 75 W C 50 W D 25 W
Question
Solution 1
The power P of an electric device is given by the formula P = V^2/R, where V is the voltage and R is the resistance.
Step 1: First, we need to find the resistance of the bulb when it is operated at its rated voltage. We can rearrange the formula to R = V^2/P.
Step 2: Substituting the given value Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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