Two capacitors `3muF` and `4muF` have same maximum voltage rating `V_(0)`. When they are connected in series, they can withstand a maximum potential difference of `700 V`. What is `V_(0)` ?

Options

A. `100 V`
B. `300 V`
C. `400 V`
D. `700 V`

Answer

C

Explanation

`V_(1) = (700 xx 4)/(3 + 4) = 400 V`
`V_(2) = (700 xx 3)/(3 + 4) = 300 V`
`V_(0)` is maximum of `(V_(1), V_(2))`
So `V_(0) = 400 V`