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Current Electricity

Question

Answer the following questions:
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?

Answer

When, a steady current is flowing through a metallic conductor of non-uniform cross section, the current flowing through the conductor remains constant. Current density, electric field and drift speed has an inverse dependence on area of cross-section.