They were first discovered in lodestone, by a farmer when the metal studs in his shoes stuck to the ground.
things like the electric bell uses electomagnrts
you find electromagnets in electric bells,telephone,t.v,radio sets all sound systems and sometimes in fans.
Electromagnetic eaves are waves that can travel through the vacuum of outer space. Microwaves, x-rays, and TV are all kinds of electromagnetic waves.
Ferromagnetic materials like iron, cobalt, or nickel make stronger electromagnets because they have high magnetic permeability. These materials concentrate magnetic field lines within the solenoid, increasing the strength of the electromagnet.
jv
invented in 500BC before electricity was invented
Gloria Mejia invented it and she invented it in 1998
The CD was invented in 2001 Thomas clamps invented it.
who invented the washboard?
When and where were snickerdoodles invented Why were snickerdoodles invented
Yes, the computer is invented.
Invented is the past participle of the verb invent. verb /past /past participle = invent /invented /invented