A) 60\[\text{ }\!\!\mu\!\!\text{ F}\]
B) 10\[\text{ }\!\!\mu\!\!\text{ F}\]
C) 20 \[\text{ }\!\!\mu\!\!\text{ F}\]
D) 40 \[\text{ }\!\!\mu\!\!\text{ F}\]
Correct Answer: D
Solution :
Using the relation \[C=\frac{{{\varepsilon }_{0}}A}{d}\] (Initially) \[C=10\mu F\] Now, \[C=\frac{{{\varepsilon }_{0}}A}{d}\] \[=\frac{{{\varepsilon }_{0}}2A}{d/2}=\frac{4{{\varepsilon }_{0}}A}{d}\] \[\left[ Here,\,\,\,\,\,A=2A,\,d=\frac{d}{2} \right]\] So, \[\frac{C}{C}=4\] or \[C=4\,\,C=4\times 10=40\mu F\]You need to login to perform this action.
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