Basic law of magnetism 2

Dipoles (2 Poles)

Every magnet has North and South poles; force is strongest at poles. Dividing a magnet creates smaller dipoles (both poles always exist)

Attraction & Repulsion

Like poles repel; unlike poles attract.

Inverse Square Law

Magnetic force is inversely proportional to the square of the distance between fields

Domains

Groups of atoms with their dipoles aligned and magnetic fields moving in the same direction.

The number aligned domains, determine determines what

strength of magnetic field

Unmagnetized Matter

Domains point in random directions, canceling each other out.

Magnetized Matter

External field pulls domains until they align in the same direction

Magnetic Induction

The process of making a ferromagnetic material magnetic by placing it in a strong external magnetic field or running electric current through it.

Outside the conductors

travel from negative To positive

Inside the conductor

Travel from positive to negative