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  4. 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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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

Current Electricity

Solution:

The area of cross section of conductor is non uniform so current density will be different but the flow of electrons will be uniform so current will be constant.