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 long wire wound tightly on a cylindrical core is called:

Question # 2

Galvanometer is a device used for the detection of

Question # 3

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

Question # 4

The field around a moving charge is called

Question # 5

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

Question # 6

Which is modified form of galvanometer

Question # 7

Lorentz force is defined as

Question # 8

The voltage increases linearly with

Question # 9

Centripetal force for electron is given by

Question # 10

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

Question # 11

Magnetic induction is also called as:

Question # 12

A resistance used in galvanometer to make it voltmeter is called

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

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

Question # 15

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 # 16

A voltmeter is used to measure the

Question # 17

The vector representation of force experience give the direction of

Question # 18

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 19

A solenoid is a coil of wire which is:

Question # 20

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

Question # 21

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

Question # 22

The SI unit of flux density is

Question # 23

magnetic field is a:

Question # 24

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

Question # 25

For the conversion of galvanometer into voltmeter, we connect a

Question # 26

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

Question # 27

Which one of the following relations is correct?

Question # 28

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

Question # 29

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 30

Ammeter is used to measure

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
2 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
3 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
4

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
5 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
6 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
7 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
8 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
9 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
10 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these

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