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Two point charge q(p)=+2 mu C and q(Q)=-...

Two point charge `q_(p)=+2 mu C` and `q_(Q)=-2 mu C` are placed at a distance of `10cm` in air/vacuum. (a) Calculate the electric field intensity along the center of line joining the two chages. (b) If a test charge `q_(R)=-1.2times10^(-9)C` is placed at center of the PQ write the value of force acting on test charge `q_(R)` and its direction.

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