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

Electron gun consist of

Question # 2

When current passes through a solenoid coil, it behaves like a

Question # 3

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

Question # 4

Magnetic flux and flux density are related by

Question # 5

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 # 6

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

Question # 7

Magnetic lines of force:

Question # 8

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

Question # 9

The unit of flux density is also given by

Question # 10

The torque per unit twist of coil is called

Question # 11

The SI unit of magnetic flux is.

Question # 12

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 # 13

In the expression of force experienced by electron, the direction of both v and B are

Question # 14

A resistance used in galvanometer to make it voltmeter is called

Question # 15

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 16

The SI unit of flux density is.

Question # 17

magnetic field is a:

Question # 18

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

Question # 19

Centripetal force for electron is given by

Question # 20

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 # 21

Flurescent screen is a screen where visible spot

Question # 22

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

Question # 23

A field is uniform and much stronger:

Question # 24

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 25

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 26

The SI unit of magnetic flux is

Question # 27

Magnetic induction is also called as:

Question # 28

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

Question # 29

A voltmeter is used to measure the

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
2 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
3 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
4 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
5 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
6 '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
7 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
8 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
9 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
10 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B

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