It is the gradient of the electric potential, and a test charge will experience a force when placed in these regions, whose magnitude is given by k q over r squared.
The Stark effect sees the splitting of spectral lines of atoms due to the presence of these, and a time varying one necessitates the introduction of a displacement current in Ampere's law. Their energy density is equal to their magnitude squared times half of the permittivity constant. It is the gradient of the electric potential, and a test charge will experience a force when placed in these regions, whose magnitude is given by k q over r squared. For 10 points, identify these regions, whose lines point in the direction where a positive charge will travel.
The Stark effect sees the splitting of spectral lines of atoms due to the presence of these, and a time varying one necessitates the introduction of a displacement current in Ampere's law.
electric field