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A battery of emf 2.0 V and internal resi...

A battery of emf 2.0 V and internal resistance `0.50(Omega)`supplies a current of 100 mA. Find (a) the potential defference across the terminals of the battary and (b) the thermal energy develop in the battery in 10 s.

Text Solution

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(a) The potential difference across the terminals is
`V_(A)-V_(B)=(V_(A)-V_(C))-(V_(B)-V_(C))`
`=(epsilon)-ir.`
`2.0V-(0.100A)(0.50(Omega))=1.96V.`
`The thermal energy develop in the battery is
`U=i^(2)rt=(0.100A)^(2)(0.50(Omega))(10s)=0.05 J.`
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HC VERMA-ELECTRIC CURRENT IN CONDUCTORS-Exercises
  1. A battery of emf 2.0 V and internal resistance 0.50(Omega)supplies a c...

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  2. The amount of charge passed in time t through a cross-section of a wir...

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  3. An electric gun emits 2.0xx10^(16) electrons per second. What electric...

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  4. The electric current existing in a discharge tube is 2.0(mu)A.How much...

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  5. The current through a wire depends on time as I = i(0) + alphat, ...

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  6. A current of 1.0 A exists in a copper wore of cross-section 1.0mm^(2)....

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  7. A wire of length 1 m and radius 0.1mm has a resistance of 100(Omega).F...

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  8. A uniform wire resistance 100(Omega)is melted and recast in a wire of ...

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  9. Consider a wire of length 4m and cross-sectional areal 1 mm^(2) carryi...

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  10. What length of a copper wire of cross-sectional area 0.01 mm^2 will be...

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  11. Shown a conductor of length l having a circular cross section. The rad...

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  12. A copper wire of radius 0.1mm and resistance 1k(Omega)is connected acr...

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  13. Calculate the electric field in a copper wire of cross-sectional area2...

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  14. A wire has a length of 2.0m and a resistance of 5.0(Omega).Find the el...

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  15. The resistances of an iron wire and a copper wire at 20^(@)Care 3.9(Om...

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  16. The current in a conductor and the potential difference across its end...

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  17. Shown an arrangement to measure the emf (epsilon)and internal resistan...

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  18. The potential difference between the terminals of a battery of emf 6.0...

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  19. The potential difference between the terminals of a 6.0V battery is 7....

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  20. The internal resistance of an accumulator battery of emf 6V is 10(Omeg...

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  21. Find the value of i(1)/I(2)in figure if where R=10Omega

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