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

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 # 2

Magnetic induction is also called as:

Question # 3

Flurescent screen is a screen where visible spot

Question # 4

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

Question # 5

Avo-meter is used of measure the

Question # 6

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 7

Ammeter is used to measure

Question # 8

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

Question # 9

The vector representation of force experience give the direction of

Question # 10

The most suitable material for permanent magnet is

Question # 11

The SI unit of flux density is.

Question # 12

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 13

CRO deflects the beam of

Question # 14

How many number of anodes used in electron gun

Question # 15

A resistance used in voltmeter is called

Question # 16

The SI unit of magnetic flux is.

Question # 17

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 # 18

The SI unit of magnetic permeability is

Question # 19

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

Question # 20

The field around a moving charge is called

Question # 21

A voltmeter is used to measure the

Question # 22

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 23

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

Question # 24

Weber is a unit of

Question # 25

The unit of magnetic flux is

Question # 26

The current is measured in

Question # 27

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 # 28

In the formula B= µ̻ nl, the symbol n denotes:

Question # 29

The strength of magnetic field around the current conductor is

Question # 30

To convert galvanometer into ammeter we connect

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
2 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
3 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
4 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
5

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
6 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
7 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
8 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
9 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
10 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point

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