A) \[60\,\mu F\]
B) \[30\,\mu F\]
C) \[10\,\mu F\]
D) \[5\,\mu F\]
Correct Answer: A
Solution :
\[C'={{C}_{1}}+{{C}_{2}}+{{C}_{3}}\] \[=20+20+20\] \[=60\mu F\] \[\frac{1}{C''}=\frac{1}{C'}+\frac{1}{60}\] \[\frac{1}{30}=\frac{1}{C'}+\frac{1}{60}\] \[\frac{1}{C'}=\frac{1}{30}-\frac{1}{60}\] \[\frac{1}{C'}=\frac{2-1}{60}\] \[\frac{1}{C'}=\frac{1}{60}\] \[\Rightarrow \] \[C'=60\]You need to login to perform this action.
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