question_answer

Equivalent capacitor of the given combination of five capacitors is

A) \[8\mu F\]      

B) \[120\mu F\]

C) \[\omega \]                       

D) \[R/2\]

Correct Answer: A

Solution :

                The given circuit can also be made in the following way. This is just like Wheatstone bridge. As the bridge is balanced \[[{{m}^{0}}{{L}^{-1}}{{T}^{0}}]\] there will be no effect on \[[{{m}^{0}}{{L}^{0}}{{T}^{-1}}]\]capacitor. Equivalent capacitance in upper arm \[[{{m}^{0}}{{L}^{-1}}{{T}^{-2}}]\] Equivalent capacitance in lower arm \[[{{m}^{0}}{{L}^{0}}{{T}^{0}}]\] Net capacitance \[1.5\mu \]