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A steady current flows in a metallic conductor of non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are
A steady current flows in a metallic conductor of non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are
Updated On: Jun 23, 2023
- current, electric field and drift speed
- drift speed only
- current and drift speed
- current only
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The Correct Option is D
Solution and Explanation
$i=neAv_d$
Drift speed, $V_d=\frac{1}{neA}\propto \frac{1}{A}$
Therefore, for non-uniform cross-section (different values of A) drift speed will be different at different sections. Only current (or rate of flow of charge) will be same.
Drift speed, $V_d=\frac{1}{neA}\propto \frac{1}{A}$
Therefore, for non-uniform cross-section (different values of A) drift speed will be different at different sections. Only current (or rate of flow of charge) will be same.
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