question_answer 24)

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. What is E :                 (a) in the outer region of the first plate,                 (b) in the outer region of the second plate, and                 (c) between the plates ?  

Answer:

(a)                                 i.e., Electric field is zero.                 (b) Similarly, electric field is zero in this case also.                 (c) Electric field is given by                                                 .