Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The…
Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is:
Current
Drift velocity
Electric field
Current density
Solution
Current flow across the metallic conductor remains constant because the area of cross-section of conductor is non-uniform. So, Current density will be different but the number of flow of electrons will be same.