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NEET UG PHYSICS MCQ: CURRENT ELECTRICITY

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Emf of lead accumulator after complete charging is

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Correct option: D

2.2 {~V}

Option D (

2.2 {~V}

) is correct because the emf of a lead accumulator after complete charging is approximately 2.2V per cell.

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In the absence of applied potential, the electric current flowing through a metallic wire is zero because A metallic block has no potential difference applied across it, then the mean velocity of free electrons at absolute temperature

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\mathrm{quantity}\,\,\mathrm{/}\,\mathrm{quantities}

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\mathrm{is}\,\,\mathrm{/}\,\,\mathrm{are}