For the series magnetic circuit shown, find the flux density to develop magnetic flux of 4 × 10–4 Wb.
_________ is the flux–producing ability of an electric current in a magnetic circuit.
A magnetic circuit has a m.m.f. of 400 AT and a reluctance of 2 x 105 AT/Wb. The magnetic flux in the magnetic circuit is_____ mWb.
An iron ring of mean length 50 cm has an air gap of 1 mm and a winding of 200 turns. If the permeability of the iron is 300 when a current of 1 A follows through coil, find the flux density in m Wb/m2
In the magnetic circuit shown in figure, the areas of cross-section of limbs B and C are respectively 0.01 m2 and 0.02 m2. Air gaps of lengths 1.0 mm and 2.0 mm respectively cut in the limbs B and C . If the magnetic medium can be assumed to have infinite permeability and flux in limb B is 1.0 Wb, the flux in limb A is