An iron core shaped as a tore number of turns mean `R = 250 mm`. The supports a winding with the total number of turns `N = 1000`. The core has a cross-cut of width `b = 1.00 mm`. With a current `I = 0.85` A flowing through the winding, the magnetic induction in the gap is equal to `B = 0.75 T`. Assuming the scarttering of the magnetic flux at the grap edges to be negligible, find the permeaiility of iron under these conditions.

A thin iron ring with mean diameter d = 50 cm supports a winding consisting of N = 800 turns carrying current I = 3.0A . The ring has a cross-cut of width b = 2.0 mm . Neglecting the scattering of the magnetic flux at the gap edges, and using the plot shown in FIg. find the permeabitliy of iron under these conditions.

A thin ring made of magnetic has a mean diameter d = 30 cm and supports a winding of N = 800 turns. The cross-sectional area of the ring is equal to S = 5.0 cm^(2) . The ring has a cross-cut of width b = 2.0 mm . When the winding carries a certain current, the permeability of the magnectic equals mu = 1400 . Neglectign the disipation of magnetic flux at the gap edges, find: (a) the ratio of magnetic energies in the gap and in the magnetic, the inductance of the system, do it two ways: using the flux and using the energy of the field.

Mean radius of a toroid is 10 cm and number of turns is 500. If current flowing through it is 0.1 A then value of magnetic induction (in tesla) for toroid is

Mean radius of a toroid is 10 cm and number of turns is 500. If current flowing through it is 0.1 A then value of magnetic induction (in tesla) for toroid is

A thin iron ring with mean diameter, d=50 cm . supports a winding consisting of 800 turns, with current 3A. The ring has a cross-cut of width 2.0 mm. The permeability of iron is (graph between B and H is given):

A current of 10 A flows, through a toroid having a core of means radius 25 cm. If 5000 turns of the conducting wire are wound on the core, then the magnetic field the core of thre toroid is

A toroidal electromagnet has 1000 turns and mean radius of 0*1m . The magnetic core has a relative permeability of 2000 . If a current of 1A is placed. Calculate the magnetic induction.

An 1 m long straight solenoid has 1000 number of turns the relative permeability of its core material is 1000. if a current of 1 A passes through the magnetic field along its axis ?