A thin metallic spherical shell of radius 39.6 cm has a total charge of 8.95 ?C

Question

A thin metallic spherical shell of radius 39.6 cm has a total charge of 8.95 ?C uniformly distributed on it. At the center of the shell is placed a point charge of 4.23 ?C. What is the electric field at a distance of 12.9 cm from the center of the spherical shell?
A thin metallic spherical shell of radius 39.6 cm has a total charge of 8.95 ?C uniformly distributed on it. At the center of the shell is placed a point charge of 4.23 ?C. What is the electric field at a distance of 12.9 cm from the center of the spherical shell?

Explanation / Answer

E = k*Qin/r^2

= 9*10^9*4.23*10^-6/0.129^2

= 2.288*10^6 N/C

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