In this diagram , the P.D. between A and B is 60 V . The P.D. across `6 mu F` capacitor is … V

Options

A. 10
B. 5
C. 20
D. 4

Answer

A

Explanation

In the given figure `3mu F` and `3 mu F ` are in parallel . Their equivalent capacitance is `6 mu F` . The equivalent circuit is as shown in the figure .

The equivalent capacitance between A and B is
`(1)/(C) = (1)/(6) + (1)/(3) + (1)/(6) + (1)/(3) = (1 + 2 + 1 + 2)/(6) = (6)/(6)`
or `C = 1 mu F`
Charge in the circuit , `Q = CV = (1 mu F ) (60 V) = 60 mu C`
The potential difference across `6 mu F` capacitor is `= (60 mu C)/(6 mu F) = 10 V`