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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

A field is uniform and much stronger:

Question # 6

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 # 7

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 8

The SI unit of magnetic permeability is

Question # 9

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 # 10

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

Question # 11

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

Question # 12

The unit of magnetic flux is

Question # 13

The pointer of a magnetic compass:

Question # 14

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

Question # 15

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

Question # 16

A resistance used in galvanometer to make it voltmeter is called

Question # 17

The SI unit of magnetic flux is.

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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 # 22

The strength of magnetic field around the current conductor is

Question # 23

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 24

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

Question # 25

The angle of deflection of coil can be measured by the

Question # 26

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

Question # 27

magnetic field is a:

Question # 28

The SI unit of magnetic induction is

Question # 29

Magnetic flux and flux density are related by

Question # 30

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
2 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
3 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
A. 5N
B. 4N
C. 1.5N
D. 6N
4 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
5 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
6 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
7 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
8 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
9 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
10 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them

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