Magnetic Field around a Coil of Wire
Physics: Edexcel IGCSE, topic 6.2.2
Magnetic Field around a Coil of Wire
A solenoid is a loop of wire coiled into a cylindrical (cylinder like) shape. The magnetic field lines for a solenoid are drawn below:
Inside the coil
- Inside the coil of wire the field lines are closely spaced parallel straight lines.
Outside
- Outside of the coil of wire, the field lines look like the field lines around a bar magnet, with a clear north and south pole (remember that magnetic field lines around a magnet go from North to South).
Test yourself on Magnetic Field around a Coil of Wire
How are field lines drawn inside a solenoid?