A constant potential difference is maintained between the ends of a conductor having non-uniform cross-section. Which of the following quantities will not change along the length of the conductor?

drift speed

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electric field

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resistance

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current

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Solution

The correct option is C current
As this conductor bears the different resistance at different point, so, we can treat it as a branch containing many resistances connected in series. And in series circuit current does not change.

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[IIT-JEE 1997]

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A constant potential difference is maintained between the ends of a conductor having non-uniform cross-section. Which of the following quantities will not change along the length of the conductor?

The correct option is C currentAs this conductor bears the different resistance at different point, so, we can treat it as a branch containing many resistances connected in series. And in series circuit current does not change.

The correct option is C current
As this conductor bears the different resistance at different point, so, we can treat it as a branch containing many resistances connected in series. And in series circuit current does not change.