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 unit of magnetic flux is

Question # 2

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

Question # 3

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 4

The strength of magnetic field around the current conductor is

Question # 5

In the region surrounding a current carrying wire:

Question # 6

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 7

The permeability of free space is measured in:

Question # 8

Magnetic induction is also called as:

Question # 9

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 10

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 11

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 # 12

The vector representation of force experience give the direction of

Question # 13

Which one of the following relations is correct?

Question # 14

Galvanometer is a device used for the detection of

Question # 15

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 16

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

Question # 17

To convert galvanometer into ammeter we connect

Question # 18

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

Question # 19

The pointer of a magnetic compass:

Question # 20

The SI unit of flux density is.

Question # 21

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

Question # 22

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

Question # 23

The force acting on a charge moving in a magnetic field

Question # 24

The CRO deflects the beam of electrons, when they passes through uniform

Question # 25

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 26

The SI unit of magnetic permeability is

Question # 27

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 28

Method "lamp and scale arrangement" used to measure the

Question # 29

Weber is a unit of

Question # 30

A current carrying conductor sets up its own:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
2 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5

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
6 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
7 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
8 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
9 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
10 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these

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