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प्रश्न
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?
पर्याय
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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?
What is a solenoid? Why do we usually keep its diameter small in comparison to its length?
The magnetic field lines outside a bar magnet:
The factors on which one magnetic field strength is produced by current-carrying solenoids depends are
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?
Differentiate between a circular coil and a solenoid.
Current is flowing through a coil as shown in the figure. Which one of the given figures will correctly depict the magnetic polarity and the direction of the lines of force along the axis of the coil?
