The conductor is connected to a voltage of 12 V, with a current of 500 mA through it. During what time will the electricity work be 100J?

16.67 secs

Explanation:

First calculate the power

Power = VI

V = voltage 12v

I = current 500mA

= 500 x 10^-3 A

Power = 12 x 500 x 10^-3

= 12 x 0.5

= 6 watts

Now

Power = work/time

Given work/energy = 100J

We have

6 = 100/time

Cross multiply

6 x time = 100

Divide both sides by 6

6/6 x time = 100/6

time = 16.67 secs

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