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 SI unit of flux density is.

Question # 2

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 3

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 4

The torque per unit twist of coil is called

Question # 5

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

Question # 6

The SI unit of flux density is

Question # 7

For the conversion of galvanometer into voltmeter, we connect a

Question # 8

The force experienced by charged particle is maximum, if it moves

Question # 9

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 10

The SI unit of magnetic permeability is

Question # 11

A current carrying conductor sets up its own:

Question # 12

F = I(L x B) is a

Question # 13

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 14

Avo-meter is used of measure the

Question # 15

magnetic field is a:

Question # 16

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

Question # 17

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

Question # 18

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 19

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

Question # 20

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

Question # 21

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 22

Resistance is measured in

Question # 23

Flurescent screen is a screen where visible spot

Question # 24

The direction of lines of force depends upon the direction of

Question # 25

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 26

The gavanometer constant of a moving coil galvanometer is given by

Question # 27

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 28

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

Question # 29

The vector representation of force experience give the direction of

Question # 30

The sources of magnetic field are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
2 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
3 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
4 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
7 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
8 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
9 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
10 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance

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