Free electricity for life #shorts

What is the contribution of electricity in our daily life?

A short electric dipole is oriented along x-direction at origin. At which of following point the electric field have no x component.

The electric potential at a point in free space due to charge Q coulomb is Q xx 10^(11) volts . The electric field at that point is

The electric potential at a point in free space due to a charge Q coulomb is Q xx 10^(11) volts. The electric field at that point is