A total charge of Q is deposited uniformly on the surface of a hollow sphere wit

Question

A total charge of Q is deposited uniformly on the surface of a hollow sphere with radius R. What is the magnitude of the electric field at the center of the sphere? What is the magnitude of the electric field at a distance R/2 from the center of the sphere? What is the magnitude of the electric field at a distance 67 cm from the center of the sphere? The radius of the sphere 33.5 cm, the charge on the sphere is 2.68 times 10-5 C and the permittivity of a vacuum is 8.8542 times 10-12 C2/N m2. Answer in units of N/C

Explanation / Answer

E=KQ/R^2

K=1/4pi(epsilon)=8.987 *10 ^9 Nm^2/C^2

E=8.987 *10 ^9 *2.68*10^-5 /0.67^2=536537.31 N/C

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