GCSE Physics

Motor Effect Directions

In the image below, the wire is at 90° to the direction of the magnetic field (which is between the poles of a horseshoe magnet).

Current is flowing to the left; the magnetic field diagonally towards us. This results in an upwards force on the wire:

Wire carrying a current in a magnetic field being deflected upwards

I wonder what would happen if we reversed the current?

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