A cloud is at a potential of `8 xx 10^(6)V` relative to the ground. A charge of 40C is transferred in a lightning stroke between the cloud and the ground. The energy dissipated is

Options

A. `5 xx 10^(-6)J`
B. `32 xx 10^(-7)J`
C. `38 xx 10^(8)J`
D. `32 xx 10^(8)J`

Answer

D

Explanation

Given, potential difference, `Delta V= 8 xx 10^(6)V`
Charge, q= 40C
The energy dissipated is, `E= Delta V xx q= 8 xx 10^(6) xx 40`
`=3.2 xx 10^(8)J`