What is Solenoid in Physics

 

A call of insulated copper wire in the form of a long cylinder is called a solenoid.

 

Magnetic Field of a Solenoid:

 

When an electric current is passed through a solenoid a magnetic field is produced which is very similar to that of a bar magnet. One end of the solenoid acts as the north pole and the other as the south pole. The magnetic field inside a solenoid is very strong because the lines of force are parallel and close to one another. The magnetic field outside the solenoid is very weak.

 

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