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The strength of the magnetic field due to a solenoid can be increased by:1. By winding solenoid on a plastic rode2. Decreasing the current strength in the solenoid3. Decreasing the number of turns of the solenoid4. Increasing the number of turns of the solenoid

Answer» Correct Answer - Option 4 : Increasing the number of turns of the solenoid

The correct answer is Increasing the number of turns of the solenoid.

  • A solenoid is a long-insulted copper wire wound in the form of a helix.

  • The purpose of the solenoid is to generate a controlled magnetic field through a coil wound into a tightly packed helix.
  • Thus, when an electric current is passed through a solenoid, the magnetic field is produced around it.
  • The strength of the magnetic field depends upon the number of turns in the solenoid, the strength of the current, and the nature of the core material used in making the solenoid.
  • The larger the current passed, the stronger will be the magnetic field produced in the solenoid.
  • The larger the number of turns in the solenoid, the greater will be the magnetic field produced.


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