Rubbing a bar magnet repeatedly in one direction along an iron bar : Single-touch method :: Passing electric…
Rubbing a bar magnet repeatedly in one direction along an iron bar : Single-touch method :: Passing electric current through a copper coil wrapped around an iron nail : ___
Electromagnetism
Demagnetization
Natural magnetization
Gravitational attraction
Solution
Rubbing creates a magnet via the single-touch stroke method, whereas sending electricity through a wire coil wrapped around an iron core creates an electromagnet.