A 12\(\Omega\) resistor dissipates 8kJ of heat in 20s. Calculate the current through the resistor
A
5.8A
B
6.9A
C
30.0A
D
33.3A
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Q = I2Rt
I = \(\sqrt{\frac{Q}{Rt}}\)
= \(\sqrt{\frac{8000}{12 \times 20}}\)
= 5.8
Source: WAEC / JAMB / NECO Classroom Archive (Record #35622)