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प्रश्न
When does a solenoid behave as a magnet? Draw the pattern of the magnetic field produced inside it showing the directions of the magnetic field lines.
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उत्तर
When a current is run via a solenoid, it acts like a bar magnet. Its opposite end functions as the magnetic South Pole and its opposite end as the magnetic North Pole. The magnetic field produced resembles that of a bar magnet. In other words, the field lines appear from one end and merge into another, much like a bar magnet.
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संबंधित प्रश्न
Why does a current carrying, freely suspended solenoid rest along a particular direction?
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.
State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.
How is the magnetic field due to a solenoid carrying current affected if a soft iron bar is introduced inside the solenoid?
A current carrying solenoid behaves like a ______.
The diagram shows a current-carrying coil passing through a cardboard sheet. Draw three magnetic lines of force on the board.
State two factors on which magnitude of magnetic field at the centre depends.
What is a solenoid? Why do we usually keep its diameter small in comparison to its length?
Which of the following diagrams correctly shows the magnetic field produced by a current-carrying wire?
The diagram below shows an insulated copper wire wound around a hollow cardboard cylindrical tube. Answer the questions that follow:
- What are the magnetic poles at A and B when the key K is closed?
- State two ways to increase the strength of the magnetic field in this coil without changing the coil.
- If we place a soft iron bar at the centre of the hollow cardboard and replace the DC source with an AC source then will it attract small iron pins toward itself when the current is flowing through the coil?
How is a solenoid prepared?
