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2 cards from this section. Quick, good the night before a test.
What happens when a bar magnet is cut in half?
Think about what defines a magnet.
What is the direction of the magnetic field around a magnet?
Consider the flow of lines.
What does the magnetic moment measure?
Remember, it's a vector quantity.
True or False: Magnetic monopoles exist.
Think about Gauss's law.
A magnet with a moment of 4 J/T experiences a field of 0.1 T. Calculate the work done to rotate from 0° to 90°.
Consider how potential energy changes with the angle.
If a magnet's magnetic field at a distance of 0.5 m from the center is 0.04 T, what is the magnetic moment if the magnet size is 0.1 m?
Use the formula for magnetic field due to a dipole.
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