Magnetism and M...

The angle of dip at a certain place on earth is 60° and the magnitude of earth\'s horizontal component of magnetic field is 0.26 G. The magnetic field at the place on earth is

Time period of a freely suspended magnet does not depend upon

Magnetic moments of two bar magnets may be compared with the help of

The time period of oscillation of a freely suspended bar magnet with usual notations is given by

In sum and difference method in vibration magnetometer, the time period is more if

At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be

Two magnets of same size and mass make respectively 10 and 15 oscillations per minute ar certain place. The ratio of their magnetic moments is

Time period for a magnet is T. It if is divided in four equal parts along its axis and perpendicular to its axis as shown then time period for each part will be

Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance 8 Ω each. They are connected in parallel with a cell of e.m.f. 4 V and negligible integral resistance. The deflections produced in the tangent galvanometers A and B are 30° and 60° respectively. It A has 2 turns, then B must have

Two uniform magnetic fields B and H are perpendicular to each other at a place. When a magnetic needle is placed in the field, it rest making angle 60° and 30° with B and H respectively. The value of B : H is