---

Magnetic Poles - Implications

---

• Where the compass points
• Magnets
• Monopoles
• Magnetic force field

Magnetic Poles

A compass is a magnet suspended so that it can turn freely.

It has a magnetic pole at each end.
Its north pole is the one that points north.

Implications --- Example: --- Question:

Magnets come in a variety of shapes but all have north-seeking and south-seeking poles.

Implications --- Example: --- Question:

Magnetic poles do not exist in isolation. Every magnet has both North and South Poles.

An isolated north or south pole is called a magnetic monopole.

Experiment continues to show that they do not exist.

Implications --- Example: --- Question:

Define the magnetic field as the force on a unit north pole at each point of space.

The field points in the direction of the force on a north pole --- the compass direction.

Implications --- Example: --- Question: