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How can a permanent magnet be demagnetized? 1. Cut the magnet in half. 2. Heat the magnet up. 3. Strike the magnet with a heavy blow. 4. both the second and third choices above.
4. both the second and third choices above.
Expert answered|Cluvsny|Points 230|
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Asked 5/7/2012 8:02:50 PM
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Questions asked by the same visitor
If you wanted to check to see if a set of Christmas lights were connected in series or parallel how could you do this?
Weegy: If one light going out causes them all to go out, that is a series circuit. [ If one light goes out and the rest remain lit, that is a parallel circuit. Read more: ] (More)
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Asked 4/30/2012 5:31:16 PM
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The output voltage and current of a transformer are determined by the what? 1. number of turns in the primary and secondary coils. 2. strength of the DC current in the primary coil. 3. ferromagnetic material of the rings connecting the coils. 4. direction of the current in the primary coil.
Weegy: The output voltage and current of a transformer are determined by the 1. number of turns in the primary and secondary coils. (More)
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Asked 5/1/2012 12:05:21 PM
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A device that changes mechanical energy to electrical energy by rotating a coil of wire through a magnetic field is called a(an) what? 1. transformer. 2. generator. 3. electromagnet. 4. current meter.
Weegy: The answer is 3. an electromagnet. (More)
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Expert Answered
Updated 5/1/2012 12:35:14 PM
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A device that changes mechanical energy to electrical energy by rotating a coil of wire through a magnetic field is called 2. generator.
Added 5/1/2012 12:35:14 PM
This answer has been added to the Weegy Knowledgebase
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