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A Steady Current Flows in a Metallic Conductor of Non-uniform Cross- Section. Which of These Quantities is Constant Along the Conductor: Current, Current Density, Electric Field, Drift Speed? - Physics

 A steady current flows in a metallic conductor of non-uniform cross-section. Which of these quantities is constant along the conductor: current, current density, electric field, drift speed?

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Solution

When a steady current flows in a metallic conductor of non-uniform cross-section, the current flowing through the conductor is constant. Current density, electric field, and drift speed are inversely proportional to the area of cross-section. Therefore, they are not constant.

Concept: Electric Currents in Conductors
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APPEARS IN

NCERT Class 12 Physics Textbook
Chapter 3 Current Electricity
Q 18.1 | Page 129
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