Physics, 13.06.2020 19:57, MPSLondon

The Electric field just outside the surface of a hollow conducting sphere of radius 25.0cm has a magnitude of 550.0N/C and is directed outward. An unknown charge Q is introduced into the center of the sphere at it is noted that the Electric field is still directed outward but has decreased to 110.0N/C. What is the charge, Q

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The Electric field just outside the surface of a hollow conducting sphere of radius 25.0cm has a mag...