A) current density
B) current
C) drift velocity
D) electric field
Correct Answer: B
Solution :
[b] As the cross-sectional area of the conductor is non-uniform so current density will be different. |
As \[I=JA\] (i) |
It is clear from Eq. (i), when area increases the current density decreases so the number of flow of electrons will be same and thus the current will be constant. |
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