An infinitely long wire is wrapped around an infinitely long cylinder of radius R making n turns per unit with steady current I. If the cylinder axis points into/out of the page, determine the directions of the velocity for a charged particle that is launched inside the cylinder such that it experiences zero magnetic force.
An infinitely long wire is wrapped around an infinitely long cylinder of radius R making n turns per unit with steady current I. If the cylinder axis points into/out of the page, determine the directions of the velocity for a charged particle that is launched inside the cylinder such that it experiences zero magnetic force.
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Needs to say which direction. The question requires direction: left, right, up, down, in, out, or in-between those.
Transcribed Image Text:An infinitely long wire is wrapped around an infinitely
long cylinder of radius R making n turns per unit with
steady current I. If the cylinder axis points into/out of
the page, determine the directions of the velocity for a
charged particle that is launched inside the cylinder
such that it experiences zero magnetic force.
Transcribed Image Text:The B expression is incorrect for this problem. I agree with your
written statement, but you are not answering the question. The
question requires direction: left, right, up, down, in, out, or in-
between those.
This is incorrect. Magnetic force is
F = q V x B.
Neither V nor B are zero in this case. How can F be zero?
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