The rectangular toroid of Figure 5.7 in Example 5.4 consists of a material whose relative permeability can be assumed to be infinite. The other...

The rectangular toroid of Figure 5.7 in Example 5.4 consists of a material whoserelative permeability can be assumed to be infinite. The other parameters are asgiven in Example 5.4. An air gap of 0.05 mm length is introduced. Calculate (a)the coil inductance Lm assuming that the core is unsaturated and (b) the maximumcurrent beyond which the flux density in the core will exceed 0.3 T.lm= 18cm N =100turns