5.5. A closely wound solenoid of 800 turns and area of cross section carries a current of 3.0 A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?
Given,
Number of turns, N = 800
Area of cross-section, A =
Current, I = 3 A
The solenoid acts like a bar magnet because a magnetic field is developed around the solenoid similar to a bar magnet
We know,
Magnetic moment, m = N x I x A
m = 800 x 3 x 2.5 x = 0.6