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

The gavanometer constant of a moving coil galvanometer is given by

Question # 2

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 3

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 4

The magnetic field in the middle of a solenoid due to current is

Question # 5

A galvanometer is an instrument used to

Question # 6

The voltage increases linearly with

Question # 7

Magnetic lines of force:

Question # 8

magnetic field is a:

Question # 9

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 # 10

Magnetic flux and flux density are related by

Question # 11

Lorentz force is defined as

Question # 12

CRO deflects the beam of

Question # 13

The sources of magnetic field are

Question # 14

The magnetic field inside a solenoid can be increased by:

Question # 15

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 16

A resistance used in voltmeter is called

Question # 17

Amperean path is a:

Question # 18

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 # 19

The SI unit of magnetic flux is.

Question # 20

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 21

Galvanometer is a device used for the detection of

Question # 22

The unit of magnetic flux is

Question # 23

The force acting on a charge moving in a magnetic field

Question # 24

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

Question # 25

The CRO is used for displaying the waveform of a given

Question # 26

The strength of magnetic field around the current conductor is

Question # 27

To convert galvanometer into ammeter we connect

Question # 28

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

Question # 29

A field is uniform and much stronger:

Question # 30

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 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
3 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
4 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
5 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
6 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
7 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
8 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
9 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)
10 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)

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