Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

At a place, if the earth's horizontal and vertical components of magnetic fields are equal, then the angle of dip will be

(a) 30°

(b)  90°

(c) 45°

(d)  0°

A moving coil galvanometer is based on the:

In a transformer, the number of turns in primary and secondary are 500 and 2000 respectively. If current in primary is 48 A, the current in the secondary is

(a) 12 A

(b) 24 A

(c) 48 A

(d) 144 A

A diamagnetic material in a magnetic field moves:

Which of the following, the most suitable material for making permanent magnet is

(a) Steel

(b) Soft iron

(c) Copper

(d) Nickel

Which of the following relation is correct in magnetism

(a)

(b) I = V + H

(c)

(d)

A dip needle in a plane perpendicular to magnetic meridian will remain

(a) Vertical	(b) Horizontal
(c) In any direction	(d)  At an angle of dip to the horizontal

Choose the wrong statement of the following:

Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that: