Question

a torch bulb uses a 3V supply and makes a current of 0.2 A .it is switched on for one minute .how much electrical energy is used?​

Answer 1

Answer:

0.6 Watt because formula for Power consumption is P = VI

Answer 2

Answer:

36 Joule

Explanation:

Electrical energy=VIt ;where V=voltage, I=current, t=time(seconds)

given V=3, I=0.2 ,t=60sec. So putting the values in the above formula,

electrical energy=3 x 0.2 x 60 Joule

=36 Joule

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hope it helped !!