A plastic rod has been bent into a circle of radius R = 6.68 cm. It has a charge Q1 = +3.46 pC uniformly distributed along one-quarter ofits circumference and a charge Q2 = -6Q1 uniformly distributed along the rest of the circumference (see the figure). With V = 0 atinfinity, what is the electric potential (a) at the center C of the circle and (b) at point P, which is on the central axis of the circle atdistance D = 6.25 cm from the center?Q2R(a) NumberiUnits(b) NumberUnits

Solution:-Given thatR=6.68 cm=0.0668 mQ1=+3.46 pC=+3.46×10-12 CQ2=-6 Q1D=6.25 cm =0.0625 m

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