Magnetic Field lines move from _______
a) North to south
b) South to north
c) West to east
d) East to west

A magnetic field that varies in magnitude from point to point but has a constant direction (east to west) is set up in a chamber. A charged particle enters the chamber and travels undeflected along a straight path with constant speed. What can you say about the initial velocity of the particle?

The horizontal component of the earth's magnetic field at a certain place is 2.5xx10^(-5)T and the direction of the field is from the geographic south to the geographic north. A very long straight conductor is carrying a steady current of 0.5 A. What is the force per unit length on it when it is placed on a horizontal table and the direction of the current is (a) east to west, (b) south to north?

The horizontal component of the earth’s magnetic field at a certain place is 3.0 x×10^(-5) T and the direction of the field is from the geographic south to the geographic north. A very long straight conductor is carrying a steady current of 1A. What is the force per unit length on it when it is placed on a horizontal table and the direction of the current is (a) east to west, (b) south to north?

The horizontal component of the earth's magnetic field at a certain place is 4.0xx10^(-5)T and the direction of the field is from the geographic south to the geographic north. A very long straight conductor is carrying a steady current of 1A. What is the force per unit length on it when it is placed on a horizontal table and the direction of the current is east to west

A short bar magnet with magnetic dipole moment 1.6 "Am"^(2) is kept in magnetic meridian in such a way that its north pole is in north direction. In this case, the null (neutral) point is found at a distance of 20 cm from the centre of the magnet. Find the horizontal component of the Earth's magnetic field.

(c) Must every magnetic configuration have a north pole and a south pole ? What about the field due to a toroid ?

When a paramagnetic substance is brought near to north or south pole of a bar magnet, then it .......

A square loop of side 10 cm and resistance 0.5 Omega is placed vertically in the east-west plane. A uniform magnetic field of 0.10 T is set up across the plane in the north-east direction. The magnetic field is decreased to zero in 0.70 s at a steady rate. Determine the magnitudes of induced emf and current during this time-interval.

A square loop of side 10 cm and resistance 0.5 Omega is placed vertically in the east-west plane. A uniform magnetic field of 0.5 T is set up across the plane in the north-east direction. The magnetic field is decreased to zero in 1.4 s at a steady rate. Determine the magnitudes of induced emf and current during this time interval .