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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
00:00
Question # 1
The strength of magnetic field around the current conductor is
Question # 2
The current is measured in
Question # 3
The pointer of a
magnetic compass:
Question # 4
Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
Question # 5
Magnetic induction is also called as:
Question # 6
Which one of the following relations is correct?
Question # 7
The unit of magnetic flux is
Question # 8
'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
Question # 9
The CRO is used for displaying the waveform of a given
Question # 10
The force acting on a charge moving in a magnetic field
Question # 11
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 # 12
A resistance used in galvanometer to make it voltmeter is called
Question # 13
(CRO) Cathode ray oscilloscope is a device used for high speed
Question # 14
In the region surrounding a current carrying wire:
Question # 15
To convert galvanometer into ammeter we connect
Question # 16
When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
Question # 17
How many number of anodes used in electron gun
Question # 18
The voltage increases linearly with
Question # 19
Which is modified form of galvanometer
Question # 20
The CRO deflects the beam of electrons, when they passes through uniform
Question # 21
The e/m of an electron moving in a circular path in a magnetic field is equal to
Question # 22
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 # 23
Electron gun consist of
Question # 24
NmA-1 is commonly called:
Question # 25
A current carrying conductor sets up its own:
Question # 26
Current is measured in
Question # 27
The vector representation of force experience give the direction of
Question # 28
F = I(L x B) is a
Question # 29
When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
Question # 30
A resistance used in voltmeter is called
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 | The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by |
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
|
| 2 | A solenoid is a coil of wire which is: |
A.
Short, loosely wound, cylindrical
B.
Long, tightly wound,
spherical
C.
Long, loosely wound,
cylindrical
D.
Long,
tightly wound, cylindrical |
| 3 | The field around a moving charge is called |
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
|
| 4 | The sources of magnetic field are |
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
|
| 5 | In the formula B= µ̻ nl, the symbol n denotes: |
A.
Total number of turns
of solenoid
B.
Number
of turns per unit length
C.
Number of turns per
unit volume
D.
Numbers of turns per
unit area |
| 6 | The CRO deflects the beam of electrons, when they passes through uniform |
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
|
| 7 | 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
|
| 8 | 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
|
| 9 | The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon |
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
|
| 10 | The SI unit of flux density is. |
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
|
Test Questions
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