21.84 • CALC A semicircle of Figure P21.844radius a is in the first and secondyquadrants, with the center of cur-vature at the origin. Positive charge+Q is distributed uniformly aroundthe left half of the semicircle, and+Qnegative charge -Q is distributeduniformly around the right half ofthe semicircle (Fig. P21.84). Whatare the magnitude and direction of the net electric field at the originproduced by this distribution of charge?

Let's take small length element dl with a charge is dq, dq+=2Qπadldq-=2Qπadl Now y-components…

Answered: 21.84 • CALC A semicircle of Figure…

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