7. To produce a magnetic field round a copper wire you have to
a. place it in Earth's magnetic field
b. run a current through
C. supply heat energy to it
d. place it near a strong m
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Answer:
Correct answer is b) run a current through
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This can help you determine what the direction of the magnetic field will be. ... Because the magnetic field created by the electric current in the wire is changing directions around the wire, it will repel both poles of the magnet by bending away from the wire.
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