Introduction to Magnetism

Flashcards from the lecture on magnetism covering definitions, key concepts, and important principles.

What are the four Maxwell equations fundamentally about?

They describe the relationship between electricity and magnetism.

What does Gauss's law state about magnetic field lines?

Magnetic field lines never start or stop; they always form closed loops.

What happens when like magnetic poles are placed near each other?

They repel each other.

What is the convention for the magnetic field direction?

It is from the north pole to the south pole inside a magnet.

What determines the strength of a magnetic field?

The amount of moving charges and their velocity.

What is the formula for the magnitude of the magnetic force on a charged particle?

F = qvB sin(θ) where q is the charge, v is the velocity, B is the magnetic field strength, and θ is the angle between v and B.

What units are used to measure magnetic field strength?

Tesla (T) and Gauss (G).

What happens when you cut a magnet in half?

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