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MCQ's Test For ECAT Physics Chapter 14 Electromagnetism
Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 14 Electromagnetism
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Question # 1
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 # 2
The most suitable material for permanent magnet is
Question # 3
F = I(L x B) is a
Question # 4
Centripetal force for electron is given by
Question # 5
The magnetic field inside a solenoid can be increased by:
Question # 6
The working of galvanometer depends upon torque exerted on a current carrying coil in
Question # 7
How many number of anodes used in electron gun
Question # 8
To convert galvanometer into ammeter we connect
Question # 9
CRO deflects the beam of
Question # 10
The voltage increases linearly with
Question # 11
Total number of turns on 0.15 m length solenoid is 300. the value of n is:
Question # 12
It is customary represent a current flowing towards the reader by a symbol
Question # 13
When current passes through a solenoid coil, it behaves like a
Question # 14
Which is modified form of galvanometer
Question # 15
The gavanometer constant of a moving coil galvanometer is given by
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ECAT Physics Chapter 14 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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 |
| 2 | Charge to mass ratio (e/m) of an electron is given by the relation |
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
|
| 3 | When charged particle is projected perpendicular to a uniform magnetic field its trajectory is |
A. circular
B. elliptical
C. cycloid
D. straight line
|
| 4 | Tesla is the unit of |
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
|
| 5 | (CRO) Cathode ray oscilloscope is a device used for high speed |
A. velocity
B. graph plotting
C. time-velocity
D. none of these
|
| 6 | The current sensitivity of the galvanometer is |
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
|
| 7 | When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into |
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
|
| 8 | 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
|
| 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 | 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
|
Test Questions
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