ap physics c - mechanics final - may 20
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4 Terms
does a magnetic field change the velocity of a particle?
no, because the force on a charged particle in a magnetic field will always be exerted perpendicular to the particle’s velocity. forces exerted perpendicular to an object’s velocity do not do any work on the object.
a larger loop with the same potential difference will give…
a lower current (because the resistance of the wire depends on the length, making the resistance greater)
and a lower magnetic field at the center
don’t forget (conventional current)
although conventional current follows protons, if a problem involved charge carriers, it is typically electrons you should be tracking!
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