1. AP Physics L10_Bfield The shadow of electricity
Magnetism
The shadow of electricity

2. Magnetic Force Magnets apply forces to each other.
Opposite poles attract, like poles repel.

3. CPS Question The magnitude of the force between magnetic poles
is the same at all distances.
becomes stronger as the poles come closer.
becomes weaker as the poles come closer.

4. Magnetic Field Lines Conventions as with electric field lines.
direction is direction of force on a north pole
strong field where lines are close together
Field lines point from North to South pole.

5. Group Work
What happens to a dipole magnet in a uniform magnetic field? B N S

6. Naming the poles
N = north-seeking
Earth’s north pole is a south pole!