Question

a charge Q is placed just above the centre of a horizontal circle of radius R and a hemisphere of of this radius is affected about the charge compute the electric flux through the closed surface that consists of the hemisphere and the planets are called you not use gauss law. ​

Answer 1

Given: A charge Q is placed just above the center of a horizontal circle of radius R and a hemisphere

To find: The flux through the closed surface that consists of the hemisphere and the planar circle.

Solution:

• We have given that A charge Q is placed just above the center of a horizontal circle of radius R and a hemisphere.

• So now, the flux of electric field due to a charge which is placed at the center of sphere will be : q / ∈o

• But hemisphere is half of sphere.

• So, we will multiply it by 1/2, we get:

             = q / ∈o x 1 / 2

             = q / 2∈o

Answer:

​                So, the flux of electric field due to a charge placed at the center of hemisphere is q / 2∈o