Electrostatics on a metal sphere

[liewliewliew]

<<Moved from a technical forum, no template>>

Why the answer is A?

 

[anorlunda]

I'm not sure of the A level label on this thread.

@liewliewliew , You must submit homework to an appropriate homwork forum and fill out the template, including your attempt at a solution.

The homework helpers won't help until you post your own attempt at a solution.

 

[PumpkinCougar95]

Have you been introduced to Gauss law? Do you that there is no E field in a conductor in Electrostatics?