Question

2. A long solenoid is made by closely winding a wise
of radius 0.5 mm over a cylindrical non-magnetic
frame so that successive turns nearly touch each
other. What will be the magnetic field at the centre
of the solenoid if a current of 5 Adows through it?
(Ans 2x *10*1​

Answer 1

Answer:

r = 0.5mm, i = 5A, B = μ0ni (for a solenoid) Width of each turn = 1mm = 10–3m Read more on Sarthaks.com - https://www.sarthaks.com/67839/long-solenoid-fabricated-closely-winding-wire-radius-over-cylindrical-nonmagnetic-frame