Charges in a B field

IB Physics: Charges in a B field

Interesting how the Amp is defined in terms of the force between two wires and not the charge per unit time.The turning force on a coil was used to measure current and voltage in moving coil meter.I always used to teach that the way to remember that the left hand rule was for motors was that motors drive on the left, not very international.There are many variations of the hand laws but I use the left hand for motors...

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