Science 8 Chap.18
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What are a few examples of magnetic materials?
Iron, cobalt, nickel, and gadolinium
the interaction between electricity and magnetism.
What is a solenoid?
a coil of wire with an electric current in it.
What is an electric motor?
a device that converts electrical energy into mechanical energy.
What is a Galvanometer?
an instrument that detects, measures, and determines the direction of a small electric current.
What are three ways to induce a current in a circuit?
Move a circuit into or out of a magnetic field
Rotate a circuit in a magnetic field
Vary the intensity of the magnetic field
What is a generator?
a machine that converts mechanical energy into electrical energy.
Define Alternating Current
n electric current that changes direction at regular intervals.
increases or decreases the voltage of an alternating current.
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