A point charge of -3.00 μC is located in the center of a spherical cavity of radius 6.70 cm inside an insulating spherical charged solid. The charge density in the solid is 7.35 × 10−4 C/m3. a) Calculate the magnitude of the electric field inside the solid at a distance of 9.40 cm from the center of the cavity. b) Find the direction of this electric field.
Here,
Charge enclosed by the solid sphere is,
b)
Direction is radially inward.
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