ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

Centripetal force for electron is given by

Question # 2

Magnetic induction is also called as:

Question # 3

The force experienced by charged particle is maximum, if it moves

Question # 4

In the region surrounding a current carrying wire:

Question # 5

A resistance used in voltmeter is called

Question # 6

In the formula B= µ̻ nl, the symbol n denotes:

Question # 7

The strength of magnetic field around the current conductor is

Question # 8

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

Question # 9

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 10

Electron gun consist of

Question # 11

The SI unit of flux density is.

Question # 12

The SI unit of magnetic flux is.

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

The most suitable material for permanent magnet is

Question # 15

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
3 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
4 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
5 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
6

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
7 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)
8 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron

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