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Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is
A
current density
B
current
C
drift velocity
D
electric field
Detailed Solution
Current density, drift velocity and electric field all depend on the area of cross-section of the conductor.
Only the current remains the same at every cross-section of a conductor of non-uniform area.
Only the current remains the same at every cross-section of a conductor of non-uniform area.