The electric field intensity at a point between two large parallel plates is 4.8 x 10^2 N/C.?

Question

What does the electric field become as a result of each of the following changes, considered separately:

a) when the amount of charge on each plate is tripled

b) when the plates are connected together by a conducting wire

I'm having trouble with some of these concepts so any explanation you could provide would be appreciated.

Answer 1

A. When you triple each charge you triple the charge flux σ (see the ref.). This in turn triples E.

B. When you short the plates there can be no voltage difference between them and E = 0.