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Ch 13 Test Review
Terms in this set (15)
T/F: Copper is a good conductor for a circuit.
T/F: A magnetic field is strongest in the middle.
T/F: An insulator conducts electric current poorly.
T/F: In a doorbell, an electromagnet converts electric energy to mechanical to magnetic.
T/F: The strength of an electromagnet can be increased by using a smaller magnetic core.
T/F: Michael Faraday told no one about his discovery.
T/F: Electrical energy is produced when a wire is wrapped around a magnet.
T/F: Changing a magnetic field generates electricity.
T/F: The slower the coils of an electromagnet move, the stronger the current.
T/F: A generator uses wires and magnets to create electricity.
T/F: Michael Faraday and Joseph Henry experimented with electricity.
T/F: A coil wrapped around an iron core is an electric compass.
T/F: Electricity flows in a circuit if it is open.
T/F: Electromagnets are used in doorbells.
T/F: Earphones change electric current to mechanical waves.
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