Practice test-Class 10 - Social Science - History - Chapter 1 : The Rise of Nationalism in Europe

Welcome to your Ncert - class 10 - science -Chapter 12 – Magnetic Effects of Electric Current 1

In an electric motor the energy transformation is:

from chemical to light

from electrical to chemical

from electrical to mechanical

from mechanical to electrical

None

A current wire produces :

both electric and magnetic fields

an electric field

neither electric nor magnetic field

a magnetic field

None

A magnet is placed in iron powder and then taken out, then maximum iron powder is at

The middle of the magnet

Some away from south pole

Some away from north pole

The end of the magnet

None

Two magnetic lines of force due to a bar magnet

Do not intersect at all

Intersect at the neutral point

Intersect near the poles of the magnet

Intersect on the equatorial axis of the magnet

None

The phenomenon of electromagnetic induction is :

the process of charging a body

producing induced current in a coil by relative motion between a magnet and a coil.

the process of generating a magnetic field dur to current passing through a coil.

the process of rotating a coil of an electric motor.

None

A current is flowing in electricity line towards north, the direction of magnetic field at a point which is just below the line is :

towards west

towards north

towards east

towards south

None

If you place a compass near a current conducting wire, it will:

Get hot

Get deflected

Glow brightly

Get charged

None

Electromagnetic induction is

Process of making electricity by the relative motion of a magnet or a coiled conductor

Process of developing a magnetic field around a coil by passing electricity through a coil

Process of rotating the armature of a generator

Charging a substance.

None

Electromagnetic induction means ......... .

motion of the coil around the axle in an electric motor.

generation of a current in a coil due to relative motion between the coil and the magnet.

charging of an electric conductor.

production of magnetic field due to a current flowing through a coil.

None

10.

Magnetic lines of force due to a bar magnet do not intersect because

None of these

A point always has a single net magnetic field

The lines have similar charges and so repel each other

The lines always diverge from a single point

None

11.

Fleming's left hand rule is used to find

Direction of magnetic force acting on conductor

Direction of current

None of these

Direction of magnetic field

None

12.

The direction of magnetic field lines in a region outside the bar magnet are ......................................

in the direction entering in both the poles of magnet

in the direction coming out from both the poles of magnet

from the N pole towards the S pole of a magnet

from the S pole towards the N pole of a magnet

None

13.

Which of the statement given below correctly describes the magnetic field near a long, straight current-carrying conductor?

The magnetic lines of force are perpendicular to the conductor going radially outward.

The magnetic lines of force are in concentric circles with the wire as the center, in a plane perpendicular to the conductor.

The magnetic lines of force are parallel to the conductor on all the sides of the conductor.

The magnetic lines of force are in a plane, perpendicular to the conductor in the form of straight lines.

None

14.

A long straight vertical wire carries a current of

10 amperes flowing upwards through it at a place, where the horizontal component of the earth's magnetic field is

0.3

0.3 gauss. Then the total magnetic field at a point 5 cm from the wire due magnetic north of the wire is:

0.1 gauss

0.7 gauss

0.5 gauss

0.4 gauss

None

15.

A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filing clinging to the

North Pole is almost equal to the South Pole.

North Pole is much less than the South Pole.

North Pole is much more than the South Pole.

Magnet will be same all along its length.

None

16.

Which of the following correctly describes the magnetic field near a long straight wire?

The field consists of concentric circles centred on the wire..

The field consists of radial lines originating from the wire

The field consists of straight lines parallel to the wire

The field consists of straight lines perpendicular to the wire

None

17.

Which of the following statements is false?

In the region where the magnetic field lines are at a close distance from each other, there will be a strong magnetic field.

The magnetic field lines from close loops.

The direction of magnitude of magnetic field line is from N to S

The magnetic field lines can cross each other

None

18.

The magnetic field produced in a straight conducting wire on passing the current through it is _______.

In the direction opposite to the current

In the direction of current

None of these

Circular around the wire

None

19.

What is the field line of a magnetic field passing through the centre of current carrying circular ring?

Ellipse

Magnetic field is zero at centre

Straight line

Circular

None

20.

With the help of which law the direction of magnetic field due to current carrying conductor be decided?

Fleming's right hand rule

Right hand thumb rule

Fleming's left hand rule

Faraday's law

None

Chapter 1 : The Rise of Nationalism in europe

Chapter 2 : Nationalism in India

Chapter 3: The Making of Global World

Chapter 4 : The Age of Industrialisation

Chapter 5: Print Culture and Modern World

Curriculum

Ncert Class 10 - History -India and the Contemporary World II.

Chapter 1 : The Rise of Nationalism in europe

Chapter 2 : Nationalism in India

Chapter 3: The Making of Global World

Chapter 4 : The Age of Industrialisation

Chapter 5: Print Culture and Modern World

Practice test-Class 10 – Social Science – History – Chapter 1 : The Rise of Nationalism in Europe