This video introduces the concept of magnetic fields from Theme D of the IB Physics SL & HL courses. Magnetic field lines are introduced and interpreted starting in the context of the magnetic field produced by a bar magnet. The magnetic field pattern around current-carrying wires is then explored, and the use of the right-hand grip rule for determining magnetic field direction is explained. This is further extended to show how to determine the magnetic field around a single coil of wire and a solenoid.
0:00 Introduction
0:27 Visualising magnetic fields
2:02 Magnetic forces
3:38 Field around a wire
4:36 Right-hand grip rule
5:55 Field around a loop of wire
6:39 Field due to a solenoid
8:15 Summary
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