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A wire of resistance 5Omega is connected...

A wire of resistance `5Omega` is connected to a battery of emf 2V and internal resistance `1Omega` (a) How much energy is transferred from the chemical to the electrical form, (b) How much apear in the wire as double heat in 2min? (c ) Account for the difference between (a) and (b)

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The correct Answer is:
80J, 66.7j, the rest is lost as heat in internal of the battery.
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NN GHOSH-HEATING AND CHEMICAL EFFECT OF CURRENT-EXAMPLE B
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  2. A 2 m long wire of resistance 4 Omega and diameter 0.64 mm is coated w...

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  5. A shortage battey with an emf of 10V and an internal resistance 1Omega...

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  9. In copper voltameter 20mg of copper is deposited on the cathode of th...

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  14. A cell develops the same power across two resistances R(1) and R(2) se...

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  15. A series battery by 6 lead accumulators each of emf 2.0V and intenal r...

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  16. A dynamo of emf varepsilon(1)=120V and internal resistance r=0.5Omega,...

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  18. In the cirucit (figure6.3) resistance R(1) and R(2) are known and cell...

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  19. A capacitor of capacitance C is charged to a voltage V(0) and subseque...

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