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प्रश्न
State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.
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उत्तर
The magnetic field due to a solenoid can be made stronger by using:
- By increasing the number of turns of winding in the solenoid.
- By increasing the current through the solenoid.
- By placing a soft iron core along the axis of solenoid.
APPEARS IN
संबंधित प्रश्न
State the direction in which current-carrying freely suspended solenoid rests
Draw a diagram to represent the magnetic field lines along the axis of a current carrying solenoid. Mark arrows to show the direction of current in the solenoid and the direction of magnetic field lines.
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.
Draw the pattern of magnetic field lines of a solenoid through which a steady current flows. What does the pattern of field lines inside the solenoid indicate?
The magnetic field lines outside a bar magnet:
Which of the following diagrams correctly shows the magnetic field produced by a current-carrying wire?
The diagram below shows a magnet moved near a coil along its axis. Which of the diagram shows correct flow of current during this motion?
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?
Ansari Sir was demonstrating an experiment in his class with the setup as shown in the figure below.
A magnet is attached to a spring. The magnet can go in and out of the stationary coil. He lifted the Magnet and released it to make it oscillate through the coil.
Based on your understanding of the phenomenon, answer the following question.
Is there any difference in the observations in the galvanometer when the Magnet swings in and then out of the stationary coil? Justify your answer.
How is a solenoid prepared?
