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

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 2

How many number of anodes used in electron gun

Question # 3

The SI unit of magnetic induction is tesla which is equal to

Question # 4

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 # 5

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 6

NmA-1 is commonly called:

Question # 7

Ammeter is used to measure

Question # 8

The angle of deflection of coil can be measured by the

Question # 9

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 10

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 11

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 # 12

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 13

The most suitable material for permanent magnet is

Question # 14

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 # 15

The strength of magnetic field around the current conductor is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
2 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
3 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
4 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
5 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
6 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
7 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
8 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)
9 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
10 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)

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