Potential (voltage) and the electric field

Question

Explain the relation between potential (voltage) and the length of the electric field arrows? (In the case of two charge points, dipole)

Answer 1

Negative gradient of potential is Electric Field

E = - dV / dr N/C

Here V is in Volts

The direction of arrows gives direction of Electric field

More closely packed lines ( st or curved mean stronger electric field ) The direction of arrow heads gives direction of Electric field or the direction of motion of free positive charge if left in that Electric Field The Electric field of a dipole is in the direction from Positive charge to -ve charge