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

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

Current density is inversely a constant.

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