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Question

A cell of emf ε & and internal resistance r is connected across circuit as given in figure. For what value of R heat generated in outer circuit is maximum, ε=10 V & r=103Ω

A
R=5 Ω
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B
R=3 Ω
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C
R=10 Ω
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D
Heat generated is independent of R
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Solution

The correct option is D Heat generated is independent of R

After balancing wheatstone bridge, circuit is independent of R. So, there is no dependency of heat generated on R.

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