Question

`125` identical drops each charged to the same potential of `50` volts are combined to from a single drop. The potential of the new frop will be
A. `50 V`
B. `250 V`
C. `500 V`
D. `1250 V`

Answer 1

Correct Answer - D
`(4)/(3) piR^(3) = 125 xx (4)/(3)pi r^(3)` or `R = 5r` or `C = 5c`
`(125q)/(V) = (5q)/(v)`
`V = 25v = 25 xx 50 "volt" = 1250 "volt"`