A resistor connected to a 12V battery draws a current of 2A. The energy dispatched in the resistor in 5 minutes is?

A. 3,600J
B. 6,000J
C. 7,200J
D. 14,400J

Correct Answer:

Option C – 7,200J

Explanation

Power drawn by the resistor = IV = (2)(3) = 24W = 24J/s

Energy dissipated = power × time = (24)(5)(60) = 7200J