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प्रश्न
What is a solenoid? Why do we usually keep its diameter small in comparison to its length?
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उत्तर
If a conducting wire (coated with an insulating paint or varnish) is closely wound on a (long) cylindrical core, the resulting coil is referred to as solenoid. It is usual to keep the diameter of the solenoid small compared to its length. This is done to bring about a greater degree of uniformity (and simplicity) in the axial magnetic field of the solenoid.
संबंधित प्रश्न
The adjacent diagram shows a small magnet placed near a solenoid AB. Current is switched on in the solenoid by pressing the key K.
- State the polarity at the ends A and B.
- Will the magnet be attracted or repelled? Give a reason for your answer.
How is the magnetic field due to a solenoid carrying current affected if a soft iron bar is introduced inside the solenoid?
What is a solenoid?
Which of the following diagrams correctly shows the magnetic field produced by a current-carrying wire?
The pattern of the magnetic field produced by the straight current-carrying conducting wire is ____________.
What does the divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate?
Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.
For the current carrying solenoid as shown, draw magnetic field lines and give reason to explain that out of the three points A, B and C, at which point the field strength is maximum and at which point it is minimum?
How is a solenoid prepared?
Differentiate between a circular coil and a solenoid.
