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05-04-2017
Physics

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what is neccessary for a magnetic field to create electric current in a copper coil?
a. the magnetic field must be moving or changing
b. the magnetic field must not be moving
c. the north pole of the magnetic field must center the coil before the south pole
d. the magnetic field must be in the center of the copper coil

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MonsieurPengu MonsieurPengu

05-04-2017

A, Lenz' Law. There need to be a difference of flux, so if you use AC you will get a current too.

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