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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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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 14 Electromagnetism
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Question # 1
Lorentz force is defined as
Question # 2
A resistance used in galvanometer to make it voltmeter is called
Question # 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
Question # 4
The direction of lines of force depends upon the direction of
Question # 5
It is customary represent a current flowing towards the reader by a symbol
Question # 6
The SI unit of magnetic flux is.
Question # 7
The galvanometer can be made sensitive if the value of the factor C/BAN is
Question # 8
The gavanometer constant of a moving coil galvanometer is given by
Question # 9
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 # 10
If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
Question # 11
A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
Question # 12
Centripetal force for electron is given by
Question # 13
The strength of magnetic field around the current conductor is
Question # 14
A beam of electrons is provided by an
Question # 15
To convert galvanometer into ammeter we connect
Question # 16
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 # 17
Galvanometer is a device used for the detection of
Question # 18
The SI unit of magnetic induction is
Question # 19
The unit of magnetic flux is
Question # 20
When current passes through a solenoid coil, it behaves like a
Question # 21
In the region surrounding a current carrying wire:
Question # 22
The most suitable material for permanent magnet is
Question # 23
Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
Question # 24
CRO deflects the beam of
Question # 25
The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
Question # 26
Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
Question # 27
When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
Question # 28
The magnetic field inside a solenoid can be increased by:
Question # 29
The CRO is used for displaying the waveform of a given
Question # 30
A current carrying conductor sets up its own:
Top Scorers Of ECAT Pre General Science Physics Chapter 14 Electromagnetism MCQ`s Test
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M M Abduullah 17 - Feb - 2021 13 Min 51 Sec 65/120 -
W Waleed Ahmed 25 - Feb - 2023 18 Min 24 Sec 55/120 -
I Inzmam Rajper 16 - Jun - 2022 10 Min 50 Sec 50/120 -
H Hiba Akhtar 06 - Mar - 2023 06 Min 56 Sec 45/120
ECAT Physics Chapter 14 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Flurescent screen is a screen where visible spot |
A. vanishes
B. is made
C. becomes small and large
D. none of these
|
| 2 | How many number of anodes used in electron gun |
A. one
B. two
C. three
D. six
|
| 3 | The SI unit of magnetic permeability is |
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
|
| 4 | 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
|
| 5 | The force experienced by an electron projected in a magnetic field B with a velocity V is given by |
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
|
| 6 | 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
|
| 7 | A long wire wound tightly on a cylindrical core is called: |
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
|
| 8 | 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
|
| 9 | A resistance used in voltmeter is called |
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
|
| 10 | The unit of magnetic flux is |
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
|
Test Questions
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