1.

A charge of 10muC is placed at the origin of x-y coordinate system.The potnetial difference between two point (0, a) and (a, 0) in volt will be

Answer»

`(9 xx 10^(-4))/(a ) `
`(9 xx 10^(4))/(8 SQRT(2))`
`(9x 10^(4))/(2a) `
zero

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