The magnetic field lines around current carrying solenoid.
1)What is the nature of the magnetic field inside current carrying loop? 
  

2)Magnetic field intensity is directly proportional to 
  

3)What is the unit of magnetic field intensity? 
  

4)The magnetic field lines at the center of the circular loop will be in the form of 
  

5)The magnetic field due to a current carrying solenoid and a bar magnet are 
  


  


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