A permanent magnet will retain its magnetism for a long period of time.
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Q2: Two north magnetic poles attract one another.
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Q8: A strong magnetic field around a conductor
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Q16: A solenoid consists of _.
A)a coil of
Q17: A solenoid converts electrical energy into mechanical
Q21: The magnetic field around an electromagnet is
Q22: Unlike magnetic poles _ and like poles
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Q38: The term reluctance in magnetic circuits is
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