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EXAMPLE 5 Find the electric field at point located at (0.2) cm due to two charges q1-2.0pC and q产 3.0uC located at (-4,0) cm and (4,0) cm, respectively EXAMPLE 6 A small ball of mass m-1.0 g is carrying negative charge q2.0 pC is attached to a massless string and hang in electric field E. The string makes an angle of 10° with vertical direction. Determine the magnitude of the electric field.
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