A) 2
B) 4
C) 6
D) 8
Correct Answer: B
Solution :
\[C=\frac{{{\varepsilon }_{0}}A}{d}=1\,pF\] (i) \[C'=\frac{x{{\varepsilon }_{0}}A}{\left( 2d \right)}=2\,pF\] (ii) Divide (ii) by (i), \[x/2\text{ }=\text{ }2/1\] \[\Rightarrow \,\,x=4\]You need to login to perform this action.
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