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3 cards from this section. Quick, good the night before a test.
What defines a magnetic field?
Consider where a magnet can exert force.
What do magnetic field lines represent?
Think of how lines can show how strong something is.
What is a magnetic field?
Think about the area affected by a magnet.
True or False: Magnetic field lines can cross each other.
Consider what it means for lines to represent direction.
You have a straight wire carrying a current. If the current increases gradually, describe the change in the magnetic field over time.
Think about how many lines are present in relation to the current size.
How would you set up an experiment to visualize the magnetic field around a wire? Describe the materials you would use and the process.
Consider how materials can reveal hidden phenomena.
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