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Three charges are placed at the vertices ofan equilateraltriangle of side 'a'as shown in the following figure. Theforce experienced by the charge placed at the vertex A ina direction normal to BC is(a) QK4TE oa2(b)- Q24TE a2)(c) Zero[AIIMS 2003] |
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Answer» Its zero. Electric field at the equatorial point (vertex A) is parallel to BC. The component of field perpendicular to BC will be E cos(90) = 0. Force acts in the direction of electric field. Therefore there is no force perpendicular to BC. (c) is correct option |
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