1.

Four similar charges each of charge +q are placed at four corners of a square of side a. Find the value of integral -int_(infty)^(a//sqrt(2)) vec(E).vec(d)r. (in volts) if value of integral -int_(a//sqrt(2))^(0) vec(E).vec(dr)=(sqrt(2)Kq)/(a)("where" K=(1)/(4 pi epsilon_(0)))

Answer»

`(4Kq)/(a)`
`(3Kq)/(a)`
`(3sqrt(2)KQ)/(a)`
`(4sqrt(2)Kq)/(a)`

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