1.

How can we find the polarity when current flows through a solenoid? Write the methods to increase the strength of magnetic field around a current carding solenoid?

Answer»

If the direction of current flow in the end of the solenoid is in the clock wise direction. South pole is formed there . If the direction of current flow is in the anti clockwise direction, the pole formed there is North. methods to increase the magnetic strength of solenoid.

  • Increase the number of turns 
  • Increase the intensity of current.
  • Increase the area of cross section of the soft iron which is used as the core.


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