A long solenoid is fabricated by closely winding a wire of radius 0.5 mm over a cylindrical
Channel: Doubtnut
Date: 05/07/2020

A long solenoid is fabricated by closely winding a wire of radius 0.5 mm over a cylindrical nonmagnetic frame so that the successive turns nearly touch each other. What would be the magnetic field B at the centre of the solenoid if it carries a current of 5 A?