Current Electricity Charging Discharging Of Capacitors Question 689
Question: When a current I is set up in a wire of radius r, the drift velocity is $ v _{d}. $ If the same current is set up through a wire of radius 2 r, the drift velocity will be
Options:
A) $ 4v _{d} $
B) $ 2v _{d} $
C) $ v _{d}/2 $
D) $ v _{d}/4 $
Show Answer
Answer:
Correct Answer: D
Solution:
[d]
$ \
Therefore ,,,,,,3-1=4\times {{10}^{-3}}\times t $
BETA
