A) x\[10\mu F\]
B) \[20\mu F\]
C) \[30\mu F\]
D) \[40\mu F\]
Correct Answer: C
Solution :
\[{{C}_{R}}={{C}_{1}}+{{C}_{2}}=\frac{{{k}_{1}}{{\varepsilon }_{0}}{{A}_{1}}}{d}+\frac{{{k}_{2}}{{\varepsilon }_{0}}{{A}_{2}}}{d}\] \[=\frac{2\times {{\varepsilon }_{0}}\frac{A}{2}}{d}+\frac{4\times {{\varepsilon }_{0}}\frac{A}{2}}{d}\]\[=2\times \frac{10}{2}+4\times \frac{10}{2}=30\mu F\]You need to login to perform this action.
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