A current of 4A flows through a 12V car headlight bulb for 5 minutes. How much energy transfer occurs during this time.

19.9J

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28.8J

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14.4kJ

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Solution

The correct option is D 14.4kJ
Given : $I = 4$ A $V = 12$ volts $t = 5 \times 60 = 300$ s
Heat transfer $H = V I t = 12 \times 4 \times 300 = 14.4$ kJ

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