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An electric motor best makes use of the fact that on a current-carrying wire in a magnetic field there exists which of these?. A) electromagnetic energy to be tapped.B) rotation.C) All of these.D) a force.E) a changing voltage.

Is this roation or all of these???

4 answers

it is not rotation, and it is not all of these.

What exactly causes a Lorentz force?
the section in the chapter states form what I am getting it, is rotation, force and a states voltage. It is no very clear
What exactly causes Lorentz force? Why do you think I asked you that question?

http://en.wikipedia.org/wiki/Lorentz_force
is the force on a point charge due to electromagnetic fields.

thanks!!