ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

The sources of magnetic field are

Question # 2

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 3

Method "lamp and scale arrangement" used to measure the

Question # 4

Which is modified form of galvanometer

Question # 5

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 6

To convert galvanometer into ammeter we connect

Question # 7

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 8

Ammeter is used to measure

Question # 9

A long wire wound tightly on a cylindrical core is called:

Question # 10

A galvanometer is an instrument used to

Question # 11

In the formula B= µ̻ nl, the symbol n denotes:

Question # 12

A voltmeter is used to measure the

Question # 13

The current sensitivity of the galvanometer is

Question # 14

Current is measured in

Question # 15

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 16

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 17

The unit of flux density is also given by

Question # 18

The permeability of free space is measured in:

Question # 19

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 20

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 21

NmA-1 is commonly called:

Question # 22

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 23

How many number of anodes used in electron gun

Question # 24

The field around a moving charge is called

Question # 25

A current carrying conductor sets up its own:

Question # 26

CRO deflects the beam of

Question # 27

A beam of electrons is provided by an

Question # 28

Avo-meter is used of measure the

Question # 29

Amperean path is a:

Question # 30

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
2 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
3

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
4 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
5 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
6 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
7 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
8 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
9 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
10 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these

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