A) 270 V
B) 3 V
C) 300 V
D) 30 V
Correct Answer: C
Solution :
(c) 300V Here, \[q=3nC=3\times {{10}^{-9}}C\] and \[r=9\,cm=9\times {{10}^{-2}}m\] \[V=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{q}{r}\] \[=\frac{9\times {{10}^{9}}\times 3\times {{10}^{-9}}}{9\times {{10}^{-2}}}\] \[=3\times {{10}^{2}}=300V\]
You need to login to perform this action.
You will be redirected in
3 sec
