A charge of 5.0 pC is distributed uniformly on a spherical surface (radius = 2.0 cm),and a second charge of -2.0 pC is distributed uniformly on a concentric spherical surface (radius = 4.0 cm).Determine the magnitude of the electric field 3.0 cm from the center of the two surfaces.
A)30 N/C
B)50 N/C
C)40 N/C
D)20 N/C
E)70 N/C

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The Answer of A charge of 5.0 pC is distributed uniformly on a spherical surface (radius = 2.0 cm),and a second charge of -2.0 pC is distributed uniformly on a concentric spherical surface (radius = 4.0 cm).Determine the magnitude of the electric field 3.0 cm from the center of the two surfaces.
A)30 N/C
B)50 N/C
C)40 N/C
D)20 N/C
E)70 N/C

A Charge of 5