How many calories of thermal energy will be generated if the electromotive force of an electric cell is 6 volt and the internal resistance is 2 ohm . and when the electric cell is connected to a resistance of 8 ohm and it flows for 21 seconds ? please answer this question
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Total 10 ohms in series .
Voltage = 6V.
Power = VXV/R = 36/10=3.6 watts
Energy = Power X Time .
Time = 21 sec.
Energy in Joules = 21X3.6 = 75.8 Joules = 0.01811663 X 1000 Calories.
= 181.1663 Calories
hope it will be helpful : )
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