Created by StemPy LabA thin ring of radius m carries nC, spread evenly. A tiny piece of the ring cm long is cut away. What is the size of the electric field at the centre of the ring now?
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← In air, a charge of +32 nC and a charge of -2.0 nC are fixed 0.42 m apart. Find the point on the line joining them, outside the pair, where the electric field is zero. How far is it from the -2.0 nC charge?A small dipole has an electric field of size F at a point on its axis. A second point is on its equatorial line, at twice the distance from the centre. What is the size of the field at the second point? →
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