Answer to Question #273717 in Electric Circuits for Nadeen

Question

find electric field of all regions

+sigma =2c ------------------

E=3

-sigma =2c -------------------

Answer 1

The diagram and values given are not clear.

Modifying the conditions of the question:

QUESTION:

Find the electric field of all regions ( I, II and III)

SOLUTION

The electric field at each region are shown in the figure below:

REGION I

At the region, the electric fields are equal in magnitude but face opposite direction.

$E_T=-E+E=0$

Hence net electric field in region I is zero

REGION II

At region 2, the electric field is uniform and face the same direction.

$E_T= E+E= 2E\\But\>E=\frac{\sigma}{2\epsilon_0}$

Net electric field in region II

$=2E=2×\frac{\sigma}{2\epsilon_0}\\=\frac{\sigma}{\epsilon_0}$

REGION III

Region III is similar to region I and the net electric field is Zero.