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Question
A resistance of 25 Ω is connected to a 12 V battery. Calculate the heat energy in joules generated per minute.
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Solution
V =12 V
R = 25 Ω
t = 1 minute = 60
current, `I=V/R=12/25=0.48A`
Heat generated = I2Rt = (0.48)2(25)(60) = 345.6 J
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