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 SI unit of flux density is.

Question # 2

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

Question # 3

Amperean path is a:

Question # 4

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

Question # 5

To convert galvanometer into ammeter we connect

Question # 6

Ammeter is used to measure

Question # 7

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

Question # 8

CRO deflects the beam of

Question # 9

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 10

The pointer of a magnetic compass:

Question # 11

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

Question # 12

Tesla is the unit of

Question # 13

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 14

Avo-meter is used of measure the

Question # 15

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 16

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

Question # 17

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

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 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 # 21

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 22

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

Question # 23

Lorentz force is defined as

Question # 24

Electron gun consist of

Question # 25

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

Question # 26

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 27

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 28

Flurescent screen is a screen where visible spot

Question # 29

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 30

Magnetic flux and flux density are related by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
2 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
3 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
4 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
5 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
6 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
7 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
8 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
9 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
10 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)

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