A solenoid of 300 turns/m is carrying a current of 5A.The length of the solenoid is 0.5m and has a radius of 1cm.Find the magnitude of magnetic field inside the solenoid.

The magnitude of magnetic field inside the solenoid is given as,
 
B=μonIwhere,μo=4π×10-7 Tesla/Amp.mn=number of turns per unit lengthI=current
On substituting the values we get,
 
B=4π×10-7 Tesla/Amp.m×300 turns/m×0.5 AmpB=1.88×10-4 Tesla

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