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 beam of electrons is provided by an

Question # 2

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 # 3

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

Question # 4

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

Question # 5

Electron gun consist of

Question # 6

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 # 7

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

Question # 8

Avo-meter is used of measure the

Question # 9

Ammeter is used to measure

Question # 10

How many number of anodes used in electron gun

Question # 11

The SI unit of magnetic permeability is

Question # 12

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

Question # 13

The most suitable material for permanent magnet is

Question # 14

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 # 15

Method "lamp and scale arrangement" used to measure the

Question # 16

The CRO is used for displaying the waveform of a given

Question # 17

The angle of deflection of coil can be measured by the

Question # 18

A resistance used in galvanometer to make it voltmeter is called

Question # 19

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 # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

The unit of flux density is also given by

Question # 25

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

Question # 26

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 27

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

Question # 28

The SI unit of magnetic flux is.

Question # 29

A solenoid is a coil of wire which is:

Question # 30

The magnetic field outside the solenoid due to current is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
2 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
3 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
6 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
7 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
8 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
9 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
10 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

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