Magnetic poles can only exist in pairs . An electric field is any region where an electric charge experiences a force. Electric field is a vector quantity. The direction of E is the direction of the force on a positive charge. A magnetic field is any region where a magnetic pole experiences a force.
Magnetic field is a vector quantity.
The direction of B is the direction of the force on a north pole. 2 Electric field lines at any point show the direction of force on a positive charge if placed there. Magnetic field lines at any point show the direction of a force on a north pole if placed there. The electric dipole moment of a pair of opposite charges is the product of the charge and the distance between them. The magnetic dipole moment of a pair of opposite magnetic poles is ithe product of the pole strength and the distance between them.