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Question
When a current of 4.0 A passes through a certain resistor for 10 minutes, 2.88 × 104 J of heat are produced. Calculate
the power of the resistor.
the voltage across the resistor.
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Solution
I = 4.0 A
H = 2.88 x 104 J
t = 10 minutes = 10 x 60 = 600 s
Power `=H/t=(2.88x10^4)/60=48W`
V`=p/I=48/4=12V`
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