A) \[\frac{V}{2}\]
B) V
C) \[\frac{3V}{2}\]
D) 2V
Correct Answer: C
Solution :
In the absence of electric field (i.e. E = 0) \[mg=6\pi \eta rv\] ?(i) In the presence of Electric field \[mg+QE=6\pi \eta r(2v)\] ?(ii) When Electric field to reduced to E/2 \[mg+Q\,\left( E/2 \right)=6\pi \eta r(v')\] ?(iii) After solving (i), (ii) and (iii) We get \[v'=\frac{3}{2}v\]You need to login to perform this action.
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