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Question
What is a solenoid ? Draw a diagram to show the magnetic field lines around a current carrying solenoid. Mention two ways to increase the strength of the field of a solenoid.
What is a solenoid ? Draw a diagram to show the magnetic field lines around a current carrying solenoid. Mention two ways to increase the strength of the field of a solenoid.
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Solution
An insulated wire wound tightly in the shape of a helix is called solenoid.. It is used to make devices such as electromagnets, inductors etc.
If current is allowed to pass through this solenoid and a rod of ferromagnetic material such as iron or steel is inserted inside it, it behaves as an electromagnet and possesses a magnetic field of its own. The magnetic field pattern is similar to that of a bar magnet. The second diagram posted is the right diagram showing magnetic field lines of a solenoid.
Two ways in which magnetic field strength can be increased are:
- By increasing the current through the solenoid
- By increasing the number of turns in the solenoid.
An insulated wire wound tightly in the shape of a helix is called solenoid.. It is used to make devices such as electromagnets, inductors etc.
If current is allowed to pass through this solenoid and a rod of ferromagnetic material such as iron or steel is inserted inside it, it behaves as an electromagnet and possesses a magnetic field of its own. The magnetic field pattern is similar to that of a bar magnet. The second diagram posted is the right diagram showing magnetic field lines of a solenoid.
Two ways in which magnetic field strength can be increased are:
- By increasing the current through the solenoid
- By increasing the number of turns in the solenoid.
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