A thin, horizontal square copper plate has a length of 6.35cm and is charged with 2.56 × 108 electrons. If the electrons are uniformly distributed on the surface, calculate the value of the electric field (with the upward direction positive) 0.93mm above the centre of the top surface of the plate.
why is the strength of the electric field at the plate's centre of mass? 0.00 N/C

Question

A thin, horizontal square copper plate has a length of 6.35cm and is charged with 2.56 × 108 electrons. If the electrons are uniformly distributed on the surface, calculate the value of the electric field (with the upward direction positive) 0.93mm above the centre of the top surface of the plate.
why is the strength of the electric field at the plate's centre of mass? 0.00 N/C

anonymous · Answer

@LastDayWork

anonymous · Answer

yea i have the answer to the question i was just wonder why i did something give me a sec

anonymous · Answer

o wait nvm lol

anonymous · Answer

E = surface charge density / epsilon0

0.093 cm small compared to dimensions of late, so use infinite plane approxn.

Actual conductor would have the electrons preferentially at the outer edges, so this is rather unrealistic example.