Magnetism and M...

Electricity and magnetism are mutually

An electron in a circular orbit of radius .05 nm performs $$10^{16}$$ revolutions per second. The magnetic moment due to this rotation of electron is (in $$Am^2$$)

In a current carrying loop of area $$A$$ a current $$I$$ is flowing. loop is placed inside a magnetic field H in upward direction. Find the potential energy of current loop inside the magnetic filed.

The magnetic moment of a current carrying loop is $$\mu =6.25\times { 10 }^{ -4 } A{ m }^{ 2 }$$ and a magnetic field of value $$0.4 \ T$$ is applied in upward direction perpendicular to the plane of loop.Find the potential energy of loop in magnetic field in joules. (The direction of current in loop is in clockwise direction.)

Two current carrying loops having $$N_1$$ turns and $$N_2$$ turns respectively both carrying a current equal to $$I$$ in the same direction, are placed inside a magnetic field $$B$$. If the radii of both loops are in the ratio $$1: 3$$ then what will be the ratio of the potential energy of loops in that magnetic field?

When a superconductor is placed in a weak external magnetic field H, and cooled below its transition temperature,

Superconducting metal in superconducting state relative permeability of

A current carrying loop of radius $$2 \  cm$$ has $$4 A$$ current flowing in an anti-clockwise direction. The plane of the loop makes an angle of $$\theta$$ with the direction of the magnetic field which is in an upward direction. the value of the magnetic field is $$0.7  \ Tesla$$.if potential energy of loop in magnetic field is $$\approx 0.01 \ J$$, then value of $$\theta $$ is:

If the magnetizing field on a ferromagnetic material is increased, its permeability

A charged particle $$(charge = q; mass = m)$$ is rotating in a circle of radius $$'R'$$ with uniform speed $$'V'$$. Ratio of its magnetic moment $$(\mu)$$ to the angular momentum $$(L)$$ is