A circular iron, core supports N turns . If a current I produces a magnetic flux `phi` across the core's cross section, then then magnetic energy is :-

An iron core supports N turns. If a current i produces a magnetic flux across the Core's cross section equal to phi , then the magnetic field energy is _______ .

An iron tor suports N = 500 turns. Find the magnetic field energy if a current I = 2.0 A preoduces a magnetic flux across the tore's cross-section equal to Phi = 1.0 mWb .

If current in the core decreases, the strength of the magnetic field

Figure shows a long straight wire of a circular cross-section (radius a) carrying steady current I. The current I is uniformly distributed across this cross-section. Calculate the magnetic field in the region r a.

Figure shows a long straight wire of a circular cross - section (radius a) carrying steady current I. The current I is uniformly distributed across this cross - section . Calculate the magnetic field in the region r lt a and r gt a

What is magnetic flux linked with a coil or N turns or are cross section A held with its plane parallel to the field?

A magnetising field fo 1000 A/m produces a magnetics flux of 2.4 xx10^(-5) Wb in an iron bar of cross sectional area 0.3 cm^(2) what is the magnetic permeability of the iron bar ?