HCV: Three rigid rods are joined to form an equilateral triangle ABC of side 1 m. Three particles
Channel: Ritesh Dahiya (RD Sir) (KDC) Kota Doubt Counter
Date: 2020-09-12

Three rigid rods are joined to form an equilateral triangle ABC of side 1 m. Three particles carrying charges 20 pC each are attached to the vertices of the triangle. The whole system is at rest in an inertial frame. The resultant force on the charged particle at A has the magnitude.
 (a) zero 
 (b) 3.6 N
 (c) 36*1.732  N 
 (d) 7.2 N

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