Why are electric field lines always emanate perpendicular to a charged surface?
To prevent surface potential
To prevent surface current
To prevent surface polarisation
All of the above

Question

Why are electric field lines always emanate perpendicular to a charged surface-To prevent surface potentialTo prevent surface currentTo prevent surface polarisationAll of the above

Toppr Admin · Accepted Answer

The correct option is B To prevent surface current
If electric field was not perpendicular to the surface, that means it has a component along the surface. Since electric field exerts a force on the charges, now we have a force on the charges along the surface. This force isn't balanced, so it will then move charges around i.e, there would be surface currents. So, to avoid that electric field must emanate perpendicular to surfaces.

Why are electric field lines always emanate perpendicular to a charged surface?To prevent surface potentialTo prevent surface currentTo prevent surface polarisationAll of the above

Why are electric field lines always emanate perpendicular to a charged surface?
To prevent surface potential
To prevent surface current
To prevent surface polarisation
All of the above