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

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

Question # 2

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

Question # 3

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 4

The SI unit of magnetic permeability is

Question # 5

Avo-meter is used of measure the

Question # 6

The SI unit of magnetic induction is tesla which is equal to

Question # 7

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

Question # 8

How many number of anodes used in electron gun

Question # 9

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 # 10

magnetic field is a:

Question # 11

A beam of electrons is provided by an

Question # 12

In the expression of force experienced by electron, the direction of both v and B are

Question # 13

if the field is directed along the normal to the area, then flux is:

Question # 14

When current passes through a solenoid coil, it behaves like a

Question # 15

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

Question # 16

The vector representation of force experience give the direction of

Question # 17

The unit of magnetic flux is

Question # 18

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

Question # 19

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 20

The CRO is used for displaying the waveform of a given

Question # 21

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 22

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

Question # 23

The angle of deflection of coil can be measured by the

Question # 24

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 25

A resistance used in voltmeter is called

Question # 26

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

Question # 27

A solenoid is a coil of wire which is:

Question # 28

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

Question # 29

The voltage increases linearly with

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 force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
2 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
3 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
4 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
6 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
7 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
8

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
9 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
10 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb

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