Practice Test-Class 10 -Science- Physics-Chapter13: Magnetic Effects Of Electric Current

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

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 north pole

Some away from south pole

The end of the magnet

None

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

In the direction opposite to the current

None of these

In the direction of current

Circular around the wire

None

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

Get deflected

Glow brightly

Get charged

Get hot

None

In an electric motor the energy transformation is:

from electrical to chemical

from electrical to mechanical

from mechanical to electrical

from chemical to light

None

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

A point always has a single net magnetic field

The lines always diverge from a single point

None of these

The lines have similar charges and so repel each other

None

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:

0.4 gauss

0.5 gauss

0.1 gauss

0.7 gauss

None

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

Straight line

Ellipse

Circular

Magnetic field is zero at centre

None

Which of the statement given below correctly describes the magnetic field near a long, straight current-carrying 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 concentric circles with the wire as the center, in a plane perpendicular to the conductor.

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

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

None

The phenomenon of electromagnetic induction is :

the process of rotating a coil of an electric motor.

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

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

the process of charging a body

None

10.

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

Magnet will be same all along its length.

North Pole is almost equal to the South Pole.

North Pole is much more than the South Pole.

North Pole is much less than the South Pole.

None

11.

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

charging of an electric conductor.

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

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.

None

12.

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

The field consists of straight lines perpendicular to the wire

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

The field consists of straight lines parallel to the wire

The field consists of radial lines originating from the wire

None

13.

Which of the following statements is false?

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

The magnetic field lines from close loops.

The magnetic field lines can cross each other

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

None

14.

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

Fleming's right hand rule

Fleming's left hand rule

Faraday's law

Right hand thumb rule

None

15.

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

in the direction entering in 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

in the direction coming out from both the poles of magnet

None

16.

Electromagnetic induction is

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

Charging a substance.

Process of rotating the armature of a generator

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

None

17.

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

18.

Fleming's left hand rule is used to find

None of these

Direction of current

Direction of magnetic field

Direction of magnetic force acting on conductor

None

19.

A current wire produces :

neither electric nor magnetic field

a magnetic field

an electric field

both electric and magnetic fields

None

20.

Two magnetic lines of force due to a bar magnet

Intersect on the equatorial axis of the magnet

Intersect at the neutral point

Intersect near the poles of the magnet

Do not intersect at all

None

Chapter 10 - Light - Reflection and Refraction

Chapter 11:The Human Eye And The Colourful World

Chapter 12:Electricity

Chapter13: Magnetic Effects Of Electric Current

Assertion and Reason

Case Based Question

Curriculum

Ncert-Class 10 - Science - Physics

Chapter 10 - Light - Reflection and Refraction

Chapter 11:The Human Eye And The Colourful World

Chapter 12:Electricity

Chapter13: Magnetic Effects Of Electric Current

Assertion and Reason

Case Based Question

Practice Test-Class 10 -Science- Physics-Chapter13: Magnetic Effects Of Electric Current