Charges `1 mu `c are placed at each of the four corners of a square of side `2sqrt(2)` m. The potential at the point of Intersection of the diagonals is ...... (K = `9 xx 10^(9)` SI unit)

Options

A. `18 xx10^(3)` V
B. 1800 V
C. `18 sqrt(2) xx10^(3)V `
D. None of these

Answer

A, C

Explanation

length of diagonal `= sqrt(8+8)= sqrt(16)`

`:.` Distance from point of intersection of diagonal of each vertices
`r=(4)/(2) = 2 m`
`:.` Potential at point of intersection
`V = (4kq)/(r)= (4xx9xx10^(9)xx10^(-6))/(2)`
`V = 18 xx10^(3)` V