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

Which of the statement given below correctly describes the magnetic field near a long, straight current-carrying 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 perpendicular to the conductor going radially outward.

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 parallel to the conductor on all the sides of the conductor.

None

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

In an electric motor the energy transformation is:

from electrical to mechanical

from mechanical to electrical

from electrical to chemical

from chemical to light

None

Fleming's left hand rule is used to find

None of these

Direction of magnetic field

Direction of magnetic force acting on conductor

Direction of current

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:

0.1 gauss

0.5 gauss

0.4 gauss

0.7 gauss

None

Two magnetic lines of force due to a bar magnet

Intersect at the neutral point

Do not intersect at all

Intersect near the poles of the magnet

Intersect on the equatorial axis of the magnet

None

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

A current wire produces :

neither electric nor magnetic field

a magnetic field

an electric field

both electric and magnetic fields

None

The phenomenon of electromagnetic induction is :

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.

the process of charging a body

None

10.

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

Magnetic field is zero at centre

Straight line

Ellipse

Circular

None

11.

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 south

towards east

None

12.

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

Right hand thumb rule

Fleming's right hand rule

Faraday's law

Fleming's left hand rule

None

13.

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

Glow brightly

Get deflected

Get hot

Get charged

None

14.

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

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 of these

None

15.

Electromagnetic induction is

Charging a substance.

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

Process of rotating the armature of a generator

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

None

16.

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

17.

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 much less than the South Pole.

North Pole is much more than the South Pole.

North Pole is almost equal to the South Pole.

None

18.

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

In the direction of current

In the direction opposite to the current

None of these

Circular around the wire

None

19.

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

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

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

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

charging of an electric conductor.

None

20.

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

Some away from south pole

Some away from north pole

The end of the magnet

The middle of the magnet

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