An iron rod of `0.5 cm^2` area of cross-section is subjected to a magnetising field of 1,200 `Am^-1`. If susceptibility of iron is 599, calculate `mu`

An iron rod of 0.1 m^2 area of cross-section subjected to a magnetising field of 1,000 Am^-1 . Calculate its magnetic permeability. Given susceptibility of iron is 59.9.

A 0.5m long metal rod PQ completes the circuit as shown in the figure. The area of the circuit is perpendicular to the magnetic field of flux density 0.15 T. If the resistance of the total circuit is 3Omega calculate the force needed to move the rod in the direction as indicated with a constant speed of 2 ms^(-1)

An a.c. generator consists of a coil of 100 turns and cross sectional area of 3 m^(2) , rotating at a constant angular speed of 60 rad//sec in a uniform magnetic field of 0.04 T. The resistance of the coil is 500 Omega . Calculate max. power dissipation in the coil.

An a.c. generator consists of a coil of 100 turns and cross sectional area of 3 m^(2) , rotating at a constant angular speed of 60 rad//sec in a uniform magnetic field of 0.04 T. The resistance of the coil is 500 Omega . Calculate maximum current drawn from the generator.

For a magnetising field of intensity 2xx10^3A//m , aluminium at 280K acquires intensity of magnetisation of 4.8xx10^-2Am^-1. Find the susceptibility of aluminium at 280K. If the temperature of the metal is raised to 320K, what will be its susceptibility and intensity of magnetisation?

A toroidal solenoid with an air core has an average radius of 15 cm , area of cross-section 12 cm^(2) and 1200 turns . Ignoring the field variation across the cross-section of the toroid the self-inductance of the toroid .

A closely wound coil of 100 turns and area of cross-section 1cm^(3) has a coefficient of self-induction 1 mH. The magnetic induction in the centre of the core of the coil when a current of 2A flows in it, will be

The resistance of 100 cm of a thin strip of a metal is found to be 2.5 Omega . The cross-section of the strip is a rectangle of 2 mm xx 0.5 mm . Calcualte resistivity of the material fo strip.

The amgnetising field of 1600 Am^-1 produces a magnetic flux of 2.4 xx 10^-5 weber in a bar of iron of cross-section 0.2 cm^2 . Calculate relative permeability, intensity of magnetisation and susceptibility of the bar.