Question

A charge q is placed at the centre of the line joining two equal charges q.the system of the three charge will be in equlibrium if q is equal to

Answer 1

Answer:

-Q/4

Explanation:

At equilibrium, net force will be zero, hence

∴

4πε

0

1

×

(r/2)

2

Qq

+

4πε

0

1

×

r

2

Q

2

=0

4q=−Q or q=−

4

Q

.

Answer 2

Explanation:

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