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The given figure shows an equilateral tr...

The given figure shows an equilateral triangle ABC. A positive point charge |q is located at each of the three vertical A, B and C. each side of the triangle is of length a.
A point charge Q (that may be positive or negative) is placed at the mid-point between B and C.

Determine an expression for the magnitude and sign of Q so that the net force on the charge at A is zero newtons.

A

`Q = +q((3sqrt(3))/(4))`

B

`Q = -q((3sqrt(3))/(4))`

C

`Q = -q((4sqrt(3))/(4))`

D

`Q = +q((3)/(4sqrt(3)))`

Text Solution

Verified by Experts

The correct Answer is:
B
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