charges

# charges - Note-A-Rific Charges We know that a charge moving...

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Note-A-Rific: Charges We know that a charge moving through a wire (current) experiences a force if the wire is placed in a magnetic field. Is there any reason why a single charge moving freely (no wire) should not experience the same force? The answer is no, there is nothing special about a charge moving in a wire. o A charge moving through a magnetic field will experience a force, and we only need to modify what we already know about current carrying wires to handle problems involving single charges. If n particles with charge q pass by a given point in time t , they are part of an electrical current, I . I= n q / t Note that this is just a modification of the formula I = q/t. We’ve added the “n” since a wire would usually be carrying many charges. We’re going to take our formula for many charges moving in a wire in a magnetic field (F m = I l B) and transform it to a formula with only one charge moving freely. We let

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## This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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charges - Note-A-Rific Charges We know that a charge moving...

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