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

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 2

A beam of electrons is provided by an

Question # 3

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 # 4

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 # 5

Magnetic induction is also called as:

Question # 6

The SI unit of flux density is

Question # 7

The SI unit of magnetic induction is

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

In a moving coil galvanometer, the deflecting couple depends upon

Question # 12

Magnetic flux and flux density are related by

Question # 13

Which is modified form of galvanometer

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

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

Question # 16

NmA-1 is commonly called:

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

The CRO is used for displaying the waveform of a given

Question # 21

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

Question # 22

Electron gun consist of

Question # 23

The sources of magnetic field are

Question # 24

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

Question # 25

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 26

The magnetic field inside a solenoid can be increased by:

Question # 27

The permeability of free space is measured in:

Question # 28

Resistance is measured in

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
2 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
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
5 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
6 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
7 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
8 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
9 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
10 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

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