2 mWb is to be produced in the air gap of the magnetic circuit shown in figure 6. How much ampere turns must the coil provide to achieve this? Relative permeability ty of the core
material may be assumed to be constant and equal to 5000. All the dimensions shown are in
cm and the sectional area is 25 cm² throughout.

2mWb is to be produced in the air gap of the magnetic circuit shown in figure 21.17.Relaqtive permeability ?r of the core material may be assumed to be All the dimensions shown are in cm and the sectional area is 25cm2 throughout.

Explanation:

soft,hard and rough for soft would be a pillow or a stuffed animal hard wood floor or a table rough paint