A 120(Omega) resistor dissipates 8 kJ of heat in 20s. Calculate the current through the resistor
-
A.
5.8A -
B.
6.9A -
C.
30.0A -
D.
33.3A
Correct Answer: Option A
Explanation
Q = I2Rt
I = (sqrt{frac{Q}{Rt}})
= (sqrt{frac{8000}{12 times 20}})
= 5.8