Mammoth Memory

An electric coil between two magnets

We can see from the diagram below that within the magnetic field, the current travelling along the loop of wire is moving to the right at the top of the loop and to the left at the bottom - ie, opposite directions.

A coil from an electric circuit placed between two magnets

If we use Fleming's left-hand rule, which is used when electricity is already being passed through a wire, we can determine the direction of the forces on each of the wires.

Using Flemings left hand rule on a coil between two magnets

The forces of motion on the wires can be shown as follows:

The forces on a coil between two magnets

If we could pivot this coiled wire we would get a turning motion.

The forces on the coil cause it to spin around the pivot points

The coil would start to spin

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