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Three charges Q, +q and +q are placed at...

Three charges Q, `+q` and `+q` are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to

A

`(-q) /(1+sqrt2)`

B

`(-2q) /(2+sqrt2)`

C

`-2q`

D

`+q`

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  • Three charges Q, +q and +q are placed at the vertices of a right angle triangle (isoscles triangle) as shown. The net electrostatic energy of the configuration is zero, if Q is equal to :

    A
    `(-q)/(1+sqrt(2))`
    B
    `(-2q)/(2+sqrt(2))`
    C
    `-2q`
    D
    `+q`

  • Three charge +q, -q , and +2q are placed at the vertices of a right angled triangle (isosceles triangle)as shown. The net electrostatic energy of the configuration is:

    A
    `-(kq^(2))/(a) (sqrt(2 + 1))`
    B
    `(Kq^(2))/(a)(sqrt(2) + 1)`
    C
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    D
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    A
    `(q)/(4)`
    B
    `(q)/( 2 sqrt(2))`
    C
    `sqrt(2q)`
    D
    `+q`

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