Question Detail
Question
A current of 0.3 A is passed through a lamp for 2 minutes using a 6-V power supply. The energy dissipated by this lamp during the 2 minutes is:
Correct Answer
Option A is the correct answer.
Detailed Explanation
P = VI = 6 × 0.3 = 1.8W. Time = 2 minutes = 120s. E = Pt = 1.8 × 120 = 216J.
Hint
Energy = Power × Time. Power = VI.