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VISUAL PHYSICS ONLINE 6
ELECTROMAGNETISM P60 004 (A) A charged non-magnetic particle is moving in a
magnetic field. What factors affect the magnetic force on the particle? (B) An
electron is moving near a long straight wire. When a current is applied to
the wire the electron experiences a force in the same direction as the
current flow in the wire. What was the electron’s initial direction of
motion? Explain. View solution below only after you have completed the answering the question. |
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Solution (A) Force on a moving charge in a magnetic field
F force on charge particle [N] magnitude only B strength of uniform magnetic field or magnetic flux density [T tesla] magnitude only
q charge of particle [C coulomb] magnitude only v velocity of charged particle [m.s-1] magnitude only q angle between magnetic field lines and current direction magnitude only q = 0 Þ F = 0 current direction & magnetic field direction parallel q = 90o Þ F = Fmax current direction perpendicular to magnetic field direction
(B)
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