ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

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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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

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

Question # 3

The current sensitivity of the galvanometer is

Question # 4

Which is modified form of galvanometer

Question # 5

if the field is directed along the normal to the area, then flux is:

Question # 6

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 7

Weber is a unit of

Question # 8

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 9

The CRO deflects the beam of electrons, when they passes through uniform

Question # 10

To convert galvanometer into ammeter we connect

Question # 11

The SI unit of flux density is

Question # 12

The SI unit of magnetic induction is

Question # 13

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 14

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

Question # 15

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

Question # 16

Galvanometer is a device used for the detection of

Question # 17

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 # 18

Strength of magnetic field is measured in SI units, in:

Question # 19

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

Question # 20

The gavanometer constant of a moving coil galvanometer is given by

Question # 21

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 22

The pointer of a magnetic compass:

Question # 23

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 24

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 25

Magnetic induction is also called as:

Question # 26

NmA-1 is commonly called:

Question # 27

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 28

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

Question # 29

The field around a moving charge is called

Question # 30

How many number of anodes used in electron gun

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
2 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
3 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
4 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
5

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
6 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°
7 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
8 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
9 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
10

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

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