KEY TAKEAWAYS •
Magnetic field lines are continuous, going through the magnet itself.
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The units for magnetic field are the tesla.
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Motors are devices that make use of electrical energy and loops of wire that generate a magnetic force, putting torque on a shaft.
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There is a strong relationship between the movement of charge and the creation of a magnetic field.
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The magnetic field can cause a deflection on a galvanometer but only when the magnet is moving.
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Inductance involves the generation of an emf by changing the current of a nearby device affecting another device.
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Electromagnetic waves involve a wide range of frequencies, indicating a substantive similarity between electricity and magnetism.
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All electromagnetic waves travel at the speed of light.
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