A 12Ω resistor dissipates 8kJ of heat in 20s. Ca...
A 12Ω resistor dissipates 8kJ of heat in 20s. Calculate the current through the resistor
5.8A
6.9A
30.0A
33.3A
Correct answer is A
Q = I2Rt
I = √QRt
= √800012×20
= 5.8
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