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

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 2

The torque per unit twist of coil is called

Question # 3

Centripetal force for electron is given by

Question # 4

A resistance used in galvanometer to make it voltmeter is called

Question # 5

The vector representation of force experience give the direction of

Question # 6

The gavanometer constant of a moving coil galvanometer is given by

Question # 7

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

Question # 8

For the conversion of galvanometer into voltmeter, we connect a

Question # 9

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

Question # 10

A voltmeter is used to measure the

Question # 11

The SI unit of magnetic flux is

Question # 12

To convert galvanometer into ammeter we connect

Question # 13

The SI unit of flux density is

Question # 14

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 15

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 16

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 # 17

In the region surrounding a current carrying wire:

Question # 18

It is customary represent a current flowing towards the reader by a symbol

Question # 19

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 20

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 21

Strength of magnetic field is measured in SI units, in:

Question # 22

The pointer of a magnetic compass:

Question # 23

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 24

Avo-meter is used of measure the

Question # 25

A galvanometer is an instrument used to

Question # 26

The most suitable material for permanent magnet is

Question # 27

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 28

Galvanometer is a device used for the detection of

Question # 29

Amperean path is a:

Question # 30

The current sensitivity of the galvanometer is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
4 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
5 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)
6 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
7 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
8 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
9 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
10

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above

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