Length of a solenoid, l = 1.5 m
Diameter of solenoid, d = 4 cm
Radius, r = 2 cm
Number of tunrs per unit length is,
Current, I = 5 A
The magnetic induction inside the solenoid.
We know that, the magnetic induction at the axis inside the solenoid is given by :
So, the magnetic field inside the solenoid is .
B=μnI where n is no of turns per unit length
∴ B= (4π x 10^-7)(10/0.01)(5)=6.28 x 10^-3T
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turns per centimetre current of 5 amp...