Question

4. Charge of +2uc, +3uc & -8uc are placed at the vertices of an
equatorial triangle of side 10cm. Calculate the magnitude of
force acting on -8uc charge due to other two charges.
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Answer 1

Answer:

The answer is below:-

Explanation:

[K*2*10-6*3*10-6/(0.2)2]*cos30 + [K*2*10-6*3*10-6/(0.2)2]*cos30 = [K*2*10-6*q/0.03]

2*3*10-6*cos30/0.04 = q/0.03

q = 18*cos30/4 uC

q = 3.9 uC

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