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The internal resistance of a primary cel...

The internal resistance of a primary cell is 4 `Omega`. If generates a current of 0.2A in an external resistance of 21 `Omega`. The rate at which chemical energy is consumed in providing the current is

A

0.42J/s

B

1J/s

C

0.84J/s

D

5J/s

Text Solution

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The correct Answer is:
B
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