A 4.0-pC point charge is placed at the centre of a hollow (inner radius = 2.0 cm, outer radius = 4.0 cm) conducting sphere which has a net charge of 4.0 pC.Determine the magnitude of the electric field at a point which is 6.0 cm from the point charge.
A)35 N/C
B)25 N/C
C)30 N/C
D)20 N/C
E)10 N/C

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The Answer of A 4.0-pC point charge is placed at the centre of a hollow (inner radius = 2.0 cm, outer radius = 4.0 cm) conducting sphere which has a net charge of 4.0 pC.Determine the magnitude of the electric field at a point which is 6.0 cm from the point charge.
A)35 N/C
B)25 N/C
C)30 N/C
D)20 N/C
E)10 N/C

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