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

Avo-meter is used of measure the

Question # 2

A resistance used in voltmeter is called

Question # 3

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

Question # 4

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

Question # 5

The current sensitivity of the galvanometer is

Question # 6

Which is modified form of galvanometer

Question # 7

Tesla is the unit of

Question # 8

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 # 9

The SI unit of magnetic induction is

Question # 10

The direction of lines of force depends upon the direction of

Question # 11

In the region surrounding a current carrying wire:

Question # 12

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 # 13

The permeability of free space is measured in:

Question # 14

F = I(L x B) is a

Question # 15

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

Question # 16

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 # 17

A voltmeter is used to measure the

Question # 18

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 19

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 # 20

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 # 21

In a moving coil galvanometer, the deflecting couple depends upon

Question # 22

The field around a moving charge is called

Question # 23

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

Question # 24

Galvanometer is a device used for the detection of

Question # 25

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

Question # 26

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

Question # 27

The voltage increases linearly with

Question # 28

NmA-1 is commonly called:

Question # 29

Resistance is measured in

Question # 30

The CRO is used for displaying the waveform of a given

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
2 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
3 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
4 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
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 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
7 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
8 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
9 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
10 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these

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