Problem #0041 Electricity & Magnetism Sub-menu Problem #0043 Chapters Chapters

312.

Problem 29.5 (RHK)

A point charge of is at the centre of a cubical Gaussian surface 55 cm on edge. We have to find through the surface.

Solution:             Click For PDF Version

As the point charge of has been placed at the centre of a cube of edge 55 cm electric flux through each of its six faces will be equal. Instead of calculating the flux through a face of the cube from the electric field and the definition of flux, we will workout the answer of the problem from the Gauss’s law. We have

 

 

 

Therefore,