Question

When a current of 4A passes through a certain resistor for 10min, 2.88 x 10^4 J of heat are produced. Calculate (a) power of the resistor (b) the voltage across the resistor. Plz answer fast with solution

Answer 1

Work done = Heat = 2.88*104 J

Time = 10 min = 600 sec

Power = Work Done/ Time = 2.88*104 J / 600 sec = 48 W

I = 4A

P = IV 

V = P/I = 48 / 4 A = 12 V