Question

If e is the electric field near an infinite sheet of charge and E is electric field between two similarly charged parallel plates then what will be the relation

Answer 1

Answer:

* the two plates of the same sign  E = 0

* the two plates of different sign    E/e = 2

Explanation:

In this exercise, the relationship between the field created by a plate and two infinite plates is asked.

The electric field created by each plate has the value of "e", which is related to the charge on the electric plate.

                 e = $\frac{ \sigma }{2 \epsilon_o}$

If the plate is negative the electric field is directed towards the plate and if the plate is positive the electric field is directed out of the plate.

The test charge is always positive.

When we have two plates, we have several possibilities

* the two plates of the same sign

therefore the resulting electric field on the test charge is

              E_total = e - e

              E = 0

* the two plates of different sign

              E_total = e + e

               E = 2 e

the relationship between the two fields is

             E/e = 2