A) 5 microfarad
B) 10 microfarad
C) 15 microfarad
D) 20 microfarad
Correct Answer: C
Solution :
Change, \[Q=CV\] Given, \[C=5\mu F=5\times {{10}^{-6}}F,\,V=120V\] \[Q=5\times {{10}^{-6}}\times 120\] Also, \[5\times {{10}^{-6}}\times 120=40\times C\] \[\Rightarrow \] \[C=\frac{5\times {{10}^{-6}}\times 120}{40}=15\times {{10}^{-6}}F\] \[\Rightarrow \] \[C=15\,\mu F\]You need to login to perform this action.
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