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If 'b' is the length of a wire, and 'I' current running trough it, then if put a wire inside magnetic field ( not perpendicullary and also not parallel to magnetic field lines, but some angle in between the two ), then magnetic force on a wire will be:

F = I * b * B * sin[angle]

where

I ... current

B ... magnetic flux density

B * sin[angle] gives us component of magnetic flux density perpendicular to current in a wire. I'd understand if we were talking about component of velocity or component of force, but how can we talk about component of density? It just doesn't make sense.

thank you

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# Homework Help: Component of magnetic flux density - huh?

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