Two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude `17.0 xx 10^(-22) C .m^(-2)` .What is the electric field
In the outer region of the first plate ?

Explanation

`E_(1) = (sigma_(A) + sigma_(B))/( 2in_(0))= ( sigma _(A)sigma_(A))/( 2 in_(0))= 0` `[ :. sigma_(A) = - sigma _(B) = 17.0 xx 10^(-22) C.m^(-2)]`