If `4 xx 10^(20)eV` energy is required to move a charge of `0.25` coulomb between two points. Then what will be the potential difference between them ?

Options

A. 100 V
B. 256 V
C. 200 V
D. 128 V

Answer

B

Explanation

`q=0.25C,U=4xx10^(20)eV,V=?`
U = qV
`therefore" "V=U/q=(4xx10^(20)xx1.6xx10^(-19))/0.25=256V`