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Q.

Three charges are placed at the vertices of an equilateral triangle of side 'a' as shown in the following Fig. The force experienced by the charge placed at the vertex A in a direction normal to BC is :

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a

Q24πe0a2

b

-Q24πe0a2

c

Zero

d

Q22πe0a2

answer is C.

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Detailed Solution

As electric field ( or force) is in the direction BC so force experienced in the direction perpendicular to BC is zero.

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