two point charge Qp=-2uC and Qq = -2uC are placed at a distance of 10 cm in air/vaccum. . a) calculate the electric field intesity along the centre of the lines joining the two charges b) if a test charge Qr = -1.2×10^-9 C is placed at centre of the PQ write the value of force acting on test charge Qr and its direction.
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