1.

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)

Answer»

`18 xx10^(3)` V
1800 V
`18 SQRT(2) xx10^(3)V `
None of these

Solution :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


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