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

Question # 2

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

Question # 3

Centripetal force for electron is given by

Question # 4

The CRO is used for displaying the waveform of a given

Question # 5

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

Question # 6

The voltage increases linearly with

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

The SI unit of magnetic flux is

Question # 12

magnetic field is a:

Question # 13

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

Question # 14

Electron gun consist of

Question # 15

Flurescent screen is a screen where visible spot

Question # 16

F = I(L x B) is a

Question # 17

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

Question # 18

Magnetic flux and flux density are related by

Question # 19

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

Question # 20

A resistance used in voltmeter is called

Question # 21

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

Question # 22

Method "lamp and scale arrangement" used to measure the

Question # 23

The magnetic field in the middle of a solenoid due to current is

Question # 24

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

Question # 25

In the expression of force experienced by electron, the direction of both v and B are

Question # 26

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 27

CRO deflects the beam of

Question # 28

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

Question # 29

The current sensitivity of the galvanometer is

Question # 30

The magnetic field inside a solenoid can be increased by:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
2 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
3 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
4 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
5 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
6 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
7 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
8 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
9 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
10 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

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