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Charges-q , Q, and -q are placed at an e...

Charges`-q , Q, and -q` are placed at an equal distance on a straight liner. If the total potential energy of the system of three charges is zero, then find the ratio `Q//q`.
.

A

`1 : 1 `

B

`1: 2 `

C

`1: 3 `

D

`1: 4 `

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The correct Answer is:
D
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