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What creates the magnetic field in an electromagnet?

magnetic fields around a straight wire

electric current through a straight piece of metal

electric current through a wire coil

all of these

2 Answers

4 votes

Answer:

b

Step-by-step explanation:

User Derp
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3 votes

Answer:

electric current through a wire coil

?

Step-by-step explanation:

User Maciej S
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