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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
When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
Question # 2
Current is measured in
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 galvanometer can be made sensitive if the value of the factor C/BAN is
Question # 5
A full-scale deflection is obtained in a galvanometer with a current of few
Question # 6
A shunt resistance parallel to the galvanometer is used to convert it into
Question # 7
The torque per unit twist of coil is called
Question # 8
The SI unit of magnetic permeability is
Question # 9
The voltage increases linearly with
Question # 10
The vector representation of force experience give the direction of
Question # 11
The current is measured in
Question # 12
The magnetic field in the middle of a solenoid due to current is
Question # 13
Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
Question # 14
How many number of anodes used in electron gun
Question # 15
In order to make a voltmeter, high resistance is connected with galvanometer, in
Question # 16
The SI unit of magnetic induction is
Question # 17
41 The force experience, when proton projected in a magnetic field with velocity 'v' is
Question # 18
The SI unit of magnetic flux is.
Question # 19
In the region surrounding a current carrying wire:
Question # 20
The sources of magnetic field are
Question # 21
To convert galvanometer into ammeter we connect
Question # 22
Lorentz force is defined as
Question # 23
Method "lamp and scale arrangement" used to measure the
Question # 24
Tesla is the unit of
Question # 25
The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
Question # 26
Charge to mass ratio (e/m) of an electron is given by the relation
Question # 27
Magnetic lines of force:
Question # 28
In a moving coil galvanometer, the deflecting couple depends upon
Question # 29
In the expression of force experienced by electron, the direction of both v and B are
Question # 30
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
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 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 | Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis: |
A. Maximum
B. Minimum
C. Zero
D. Very small
|
| 4 | In the region surrounding a current carrying wire: |
A. A magnetic field is
setup
B.
The lines of force are
elliptical
C.
Direction of lines of
forces depends upon direction of current
D.
Both
(A) and (C) |
| 5 | 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
|
| 6 | A resistance used in galvanometer to make it voltmeter is called |
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
|
| 7 | 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: |
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
|
| 8 | 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
|
| 9 | Total number of turns on 0.15 m length solenoid is 300. the value of n is: |
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
|
| 10 | The SI unit of magnetic flux is |
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
|
Test Questions
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