English

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? - Physics

Advertisements
Advertisements

Question

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?

Options

MCQ
Advertisements

Solution

shaalaa.com
  Is there an error in this question or solution?
2021-2022 (March) Set 1

RELATED QUESTIONS

Why does a current carrying, freely suspended solenoid rest along a particular direction?


State the direction in which current-carrying freely suspended solenoid rests


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.

  1. What will be the polarity at the ends A and B?
  2. 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.


Why does a current carrying freely suspended solenoid rest along a particular direction? State the direction in which it rests.


Sketch the lines of force of the magnetic field of a solenoid. How does its field compare with that of a bar magnet?


The adjacent diagram shows a small magnet placed near a solenoid. State whether the magnet is attracted or repelled, as the switch is pressed. Give a reason.


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:

  1. What are the magnetic poles at A and B when the key K is closed?
  2. State two ways to increase the strength of the magnetic field in this coil without changing the coil.
  3. 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?

Refer to the image below and state how the magnetic field pattern indicates regions where the magnetic field is stronger outside the magnet. What happens to the magnetic field when the current in the circuit is reversed?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×