What is Solenoid in Physics

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.


Note: Australian children and adolescents study in schools for 12 years. Most of the country’s schools have the status of “state”. Only 30% of medium-level educational institutions are private. At the end of the secondary school, the graduate is issued a state certificate “Year 12”. In order to enter the university, the graduate not only must have this document, but also pass the entrance tests positively. The profession can also be obtained at the state higher TAFE colleges: as in England, colleges and universities train specialists. But colleges prepare Bachelors, and universities – and Bachelors, and Masters. Often one university can consist of several colleges. In fact, both College and University of Australia are universities. Training in most of them is paid. In order to receive a scholarship covering the costs of training, the entrant must have high scores on the subjects profiled for the program, have high sports or cultural achievements, fall under one of the free education programs.

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