A) 80 pF
B) 96pF
C) 100 pF
D) 120pF
Correct Answer: A
Solution :
(a) 80pF Here, \[{{C}_{1}}=\frac{{{\varepsilon }_{0}}A}{d}=10\,pF\] and \[{{C}_{2}}=K\frac{{{\varepsilon }_{0}}A}{d/2}=\frac{4\times 2{{\varepsilon }_{0}}A}{d}\] \[\left( \because \,\,K=4 \right)\] \[=8\times 10\] (using eq.(1)) \[=80\,pF\]You need to login to perform this action.
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