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प्रश्न
What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?
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उत्तर
The needle of the compass will rest in the direction of magnetic field due to the solenoid at that point.
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संबंधित प्रश्न
The following diagram shows a spiral coil wound on a hollow carboard tube AB. A magnetic compass is placed close to it. Current is switched on by closing the key.
- What will be the polarity at the ends A and B?
- How will the compass needle be affected? Give reason.
State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.
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Which of the following diagrams correctly shows the magnetic field produced by a current-carrying wire?
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Under what conditions permanent electromagnet is obtained if a current carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.
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?
Differentiate between a circular coil and a solenoid.
