Magnetism

Non-Permanent Magnets

The magnetic field created by a straight wire carrying current is very weak
To make it stronger, you can coil the wire up
The more turns in the coil, the stronger the magnetic field
A solenoid is used to make a non-permanent magnet stronger
To make it even stronger, you can insert an iron core which can make it 1000x stronger and it becomes an electromagnet
The magnetic field is stronger with a solenoid because the field lines around each loop of wire line up with each other which results in lots of field lines pointing in the same direction and are very close to each other. The closer the field lines, the stronger the field.

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When a current-carrying wire is put between magnetic poles, the magnetic field around the wire interacts with the magnetic field it has been placed in. This leads to the magnet and the conductor exerting a force on each other, which is called the motor effect and can then cause the wire to move.
The wire has to be at 90 degrees to the magnetic field to experience the full force; if the wire runs parallel to the magnetic field, it won't experience any force at all.
The magnitude of the force increases with the strength of the magnetic field and also, increases with the amount of current passing through the conductor.
Will be connected to a power pack or battery

If the magnetic field is reversed, the spinning direction will also reverse
If you reverse both the magnetic field and the current, nothing else will change
To increase the spinning of the coil, you can: make magnets stronger and current stronger

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