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Q.

Across a metallic conductor of non-uniform cross-section a constant potential difference is

            applied. The quantity which remains constant along the conductor is

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a

Current density

b

Current

c

Drift velocity

d

Electric field

answer is B.

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Detailed Solution

Across a metallic conductor of non – uniform cross section the rate of flow of

            charge through every cross section is constant hence. Current is constant.

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