Question

what is solonoid.
Give example​

Answer 1

A solenoid behaves like a bar magnet when current is passed through it. Like in bar magnet, the field lines emerge from one end and merge into another. In a solenoid, the field lines behave in the same manner. One end of Solenoid behaves as Magnetic North Pole. and Other end as Magnetic South Pole.

Examples of electromagnet solenoids include hotel door locks, water-pressure valves in air conditioning systems, MRI machines, hard disk drives, speakers, microphones, power plants, and cars

Answer 2

Answer:

A solenoid is just a coil of wire ,but when you run a current through it ,it becomes an electromagnet.

Example - Speakers , Power plants. ,cars ,etc .