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

In a moving coil galvanometer, the deflecting couple depends upon

Question # 2

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

Question # 3

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

Question # 4

The SI unit of flux density is

Question # 5

For the conversion of galvanometer into voltmeter, we connect a

Question # 6

A field is uniform and much stronger:

Question # 7

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 8

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

Question # 9

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 # 10

A voltmeter is used to measure the

Question # 11

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

Question # 12

CRO deflects the beam of

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Magnetic induction is also called as:

Question # 17

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 18

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 19

Electron gun consist of

Question # 20

Flurescent screen is a screen where visible spot

Question # 21

A current carrying conductor sets up its own:

Question # 22

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

Question # 23

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 24

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 25

The voltage increases linearly with

Question # 26

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

Question # 27

A charged particle moving at right angle to the magnetic field will experience

Question # 28

A resistance used in voltmeter is called

Question # 29

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 30

The most suitable material for permanent magnet is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 '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
2 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
3 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
4 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
5 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
6 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
7 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
8 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
9

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
10

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above

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