回視聴
Physics & Electromagnetism : Tips for Making a Stronger Electromagnet
What is Eddy Current? Equation, Formula, Experiment, Effects
Increasing the Strength of an Electromagnet – Number of Coils
A Level Physics Revision: All of Electromagnetism (in 38 minutes)
GCSE Physics - How Transformers Work #82
Coercivity & retentivity (Permanent & electromagnets) | Magnetism & matter | Physics | Khan Academy
Electromagnetic Induction: by Magnet
Magnetic field of a coil explained