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Negative charge −Q is distributed uniformly over the surface of a thin spherical insulating shell with radius R.

Calculate the magnitude of the force that the shell exerts on a positive point charge q located a distance r>R from the center of the shell (outside the shell).
Express your answer in terms of the variables q, Q, r, R, and constants π and ϵ0.

Respuesta :

Answer:

-(1/4πϵ0)Qq/r^2

Step-by-step explanation:

Firstly we have to assume the uniform shell of radius R as point charge as the point charge.

Then apply coulomb equation of electrostatic charge (Fe=q1q2/4πϵ0r2) where the q1 and q2 are point charges and r is the distance from the centre of charges.

But remember there's a condition that r>>R otherwise the charge will get non-uniformely distributed.