A $10\, V$ storage battery of negligible internal resistance is connected across a $50\,\Omega $ resistor. How much heat energy is produced in the resistor in $1$ hour ............... $J$
Medium
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(a) Energy $ = \frac{{{V^2}}}{R} \times t = \frac{{10 \times 10}}{{50}} \times 3600 = 7200\,J$
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