1.

Equal charges q are placed at the four corners A B C D of a square of length a. The mangniture of the force on the charge at B will be

Answer»

`(3q^(2))/(2piepsilon_(o)a^(2))`
`(4Q^(2))/(4piepsilon_(o)a^(2))`
`[(1+2sqrt(2))/(2)](Q^(2))/(4piepsilon_(o)a^(2))`
`[2+(1)/(SQRT(2))](q^(2))/(4piepsilon_(o)a^(2))`

ANSWER :C


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