Question

What is defined as a solenoid? Depict a diagram with a solenoid connected in a circuit. What are the ways to increase the strength of a solenoid? Explain.

Answer 1

Hint: A solenoid is a device used to convert electrical energy into mechanical energy. It is included in a coil of wire and a moveable plunger which is also known as an armature. If an electrical current has been introduced, then a magnetic field is being created around the coil which makes the plunger move in. this all will help you in answering this question.

Complete answer:
The solenoid is a device with a long cylindrical coil of wire having a large number of turns fixed together very tightly. It is included in a coil of wire and a moveable plunger which is also known as an armature.
The condition for being a solenoid is that the length of the coil must be greater than its diameter. The magnetic field around a current carrying solenoid is represented in the diagram.

This may look very much similar to that of a bar magnet. If a soft iron rod is kept inside the solenoid, it will behave like an electromagnet. The electromagnet will be a temporary magnet which is formed only when current is passing through it. Generally the soft iron metal is being used as the core in the solenoid in order to create the strong magnetism.

Note:
Like every magnet, the magnetic field of a solenoid will have positive and negative poles. These will attract or repel the materials as the real magnets. The electromagnetic field will result in the piston to move either backward or forward. This is how the movement is made by a solenoid coil.