Question

An electric drill operates at a potential difference of 120V and draws a current of 6.0 mA. If it

takes 45 s for the drill to make a hole in a piece of wood, how much energy is used by the drill?​

Answer 1

Explanation:

Potential difference => 120 V

Current => 6.0 mA

Power =>(Potential Difference)(Current) => (120)(6/1000) => 0.72 W

Time taken => 45 seconds

Energy => Power/Time taken =>0.72/45 =>0.16 J. Hope it helps you.