English

State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.

Advertisements
Advertisements

Question

State two ways by which the magnetic field due to a current carrying solenoid can be made stronger.

Short Answer
Advertisements

Solution

The magnetic field due to a solenoid can be made stronger by using:

  1. By increasing the number of turns of winding in the solenoid.
  2. By increasing the current through the solenoid.
  3. By placing a soft iron core along the axis of solenoid.
shaalaa.com
  Is there an error in this question or solution?
Chapter 10: Electro-Magnetism - EXERCISE-10 (A) [Page 240]

APPEARS IN

Selina Physics [English] Class 10 ICSE
Chapter 10 Electro-Magnetism
EXERCISE-10 (A) | Q 14. | Page 240

RELATED QUESTIONS

How does a solenoid behave like a magnet? Can you determine the north and south poles of a current-carrying solenoid with the help of a bar magnet? Explain.


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


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


Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is the relation known? How much heat will an instrument of 12W produce in one minute if it is connected to a battery of 12V?


Draw magnetic field lines in and around a current-carrying straight solenoid.


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?


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.


What does the divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate?


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?

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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×