Magnetic Field and Field Lines

IMPORTANT

Magnetic Field and Field Lines: Overview

This Topic covers sub-topics such as Magnetic Field, Magnetic Field Lines, Properties of Magnetic Field Lines, Compass Needle, Magnetic Field Lines of a Bar Magnet, North Seeking Pole and, South Seeking Pole

Important Questions on Magnetic Field and Field Lines

EASY
IMPORTANT

A magnet will align in South-North direction when there is no separate magnetic field present.

EASY
IMPORTANT

The end of the magnetic needle pointing the South side will be its north pole.

EASY
IMPORTANT

How will a magnet align if there is no magnetic field present? Which pole will be aligning towards the South side?

EASY
IMPORTANT

Two magnetic field lines can never ever intersect.

EASY
IMPORTANT

An electric field has a direction, but a magnetic field does not.

EASY
IMPORTANT

The SI unit of magnetic field induction is _________.

HARD
IMPORTANT

Select the properties of magnetic field lines that explains repulsion and attraction between poles.

(A) Magnetic lines of force are in a state of tension like a stretched spring.

(B) Magnetic lines of force repel each other.

(C) Magnetic lines of force do not intersect each other.

MEDIUM
IMPORTANT

The magnetic field lines do not intersect each other.

MEDIUM
IMPORTANT

Select the correct statement(s) related to properties of magnetic field lines.

EASY
IMPORTANT

A magnetic _____ is an ​electromagnetic tester.

EASY
IMPORTANT

Select the sources of electric energy.

EASY
IMPORTANT

The magnet made by using the electric current is called as _____.

EASY
IMPORTANT

When an electric current passes through a wire, it behaves like a _____.

MEDIUM
IMPORTANT

If the key in the arrangement (figure) is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are

EASY
IMPORTANT

The magnetic field lines around a bar magnet would be distorted if there is a presence of chunk of iron near the bar magnet.

EASY
IMPORTANT

Compass needle will deflect in the same direction in any places around a bar magnet.

EASY
IMPORTANT

The pattern of magnetic field lines around a bar magnet can be demonstrated by iron filing experiment.

EASY
IMPORTANT

MAGLEV train incorporate the magnetic forces to lift, propel and guide the track.

EASY
IMPORTANT

Circular ring shaped magnets don't have two poles.

EASY
IMPORTANT

Magnetic levitation works under the principle of magnetic repulsion.