Rainbow 🌈 mindmap- Electromagnet

RAINBOW🌈 MIND MAP OF ELECTROMAGNET

Electromagnet 

 

An Electromagnets  is a current carrying coil with a core in it

Clock rule: The end of the electromagnet where the direction of current is anti-clockwise, becomes the north pole where the direction of current is clockwise becomes the south pole.

Clock rule

 

Material of core: Soft iron

Making a electromagnet

Factors affecting Strength of the electromagnet:

1. By increasing the current in the coil,
2. By increasing the total number of turns of the coil.

Discovered by: Hans Christan Oersted

Use: Electromagnets are used in devices like electric bell, magnetic toys, telephone etc.,