A) Drift speed
B) Current
C) Current density
D) None of these
Correct Answer: B
Solution :
When a steady current flows through a metallic conductor of non-uniform cross-section, then drift velocity \[{{V}_{d}}=\frac{I}{enA}\]or \[{{V}_{d}}\propto \frac{I}{A}\] \[E=\frac{I}{\sigma A}\] or \[E\propto \frac{I}{A}\]Both \[{{v}_{d}}\] and E change with A, only current I remains constant.
You need to login to perform this action.
You will be redirected in
3 sec
