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Earn +20 ptsQ: When does an electromagnet produce a magnetic field?
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What happens when you reverse the current in an electromagnet?
The magnetic field reverses direction.
Can a dc electric field produce magnetic field?
Yes. A steady current will produce a magnetic field, B= uI/r
When a current is passed through a coil of wire what forms Is it A. an electromagnet or B. A commutator?
a magnetic field
What causes a magnetic field to be set up around a wire?
Passing an electric current through a wire will produce an external magnetic field. This is because the electrons have spin and this spin is what produces the field. Spinning electrons (of certain characteristics) also produce the magnetic field of permanent magnets. And no spinning electrons, no magnetic field.
Is there a magnetic field around current carrying conductors?
yes.magnetic field present around the conductor.current and magnetic fields are inter related..with current we can produce magnetic field and vice versa
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