100 joules of heat is produced per second in a 4ohm resistor. What is the potential difference across the resistor?
ScienceClass 10ICSEAnswered 27 Mar 2026
Answer
H = 100J T = 1s
R = 4ohms We know that, H = I2RT
100 = I2 x 4 x 1
100/4 = I2
I = 5amp V = IR
V = 5 x 4 V = 20V