Magnetism and M...

Horizontal component of earth’s field at a height of 1m from the surface of earth is H. Its value at a height of 10 m from surface of earth is

The time period of a thin bar magnet in earth’s magnetic field is T. If the magnet is cut into four equal parts perpendicular to its length, the time period of each part in the same field will be

A superconductor exhibits perfect

The most suitable metal for making electromagnets and transformer cores is

Ferromagnetic owe their properties to

The magnetising field required to be applied in opposite direction to reduce residual magnetism to zero in called

When magnetising field on a bar of steel is increased, its magnetisation

If a toroid uses bismuth for its core, the field in the core compared to that in empty core will be slightly

A uniform magnetic field parallel to the plane of paper, existed in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by Fig.