Magnetic Fields & Electromagnetism

They start on positive charges and end on negative charges.

They always form closed loops.

They are parallel to electric field lines.

They indicate the direction of the electric force on a positive charge.

The north and south poles are isolated.

The magnet loses its magnetism.

You get two smaller magnets, each with its own north and south pole.

The magnetic field disappears.

The magnetic field points directly toward the wire carrying current out of the page.

The magnetic field points directly away from the wire carrying current out of the page.

The magnetic field is zero.

The direction depends on the exact magnitude of the currents.

Ferromagnetic

Paramagnetic

Diamagnetic

Non-magnetic

It will align itself perpendicular to the field direction.

It will not be affected by the magnetic field.

It will align itself with the field direction.

It will move in a circle.

It increases linearly with distance.

It decreases linearly with distance.

It decreases with the square of the distance.

It remains constant with distance.

To attract objects to the ground.

To provide oxygen for breathing.

To protect us from harmful solar radiation.

To regulate the Earth's temperature.

The geographic south pole

The geographic north pole

The equator

The prime meridian

It completely disappears.

It reverses direction.

It experiences disturbances and fluctuations.

It becomes stronger and more stable.

The resistance of a material to electric current.

How much a material will become magnetized in response to an external magnetic field.

The speed of light in a material.

The ability of a material to store electric charge.