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2 cards from this section. Quick, good the night before a test.
What is a magnetic field?
Think about what happens when you bring a magnet close to metal objects.
How can you visualize magnetic field lines around a wire?
Consider the direction of current in the wire.
What is created around a conductor when an electric current passes through it?
Think about the activities we discussed.
True or False: The direction of the magnetic field is the same as the direction of the electric current.
Refer back to how the right-hand rule works.
A long solenoid is connected to a battery. If the current through the solenoid is increased, what happens to the magnetic field inside the solenoid? Explain your reasoning.
Remember the relationship between current and strength.
A loop of wire is moved through a magnetic field. What is induced in the wire, and how is this principle applied in generators?
Think about how energy is transformed in a generator.
4 more questions in this section. Enroll free to practise them all.
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