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 magnetic flux is.

Question # 2

It is customary represent a current flowing towards the reader by a symbol

Question # 3

A galvanometer is an instrument used to

Question # 4

A beam of electrons is provided by an

Question # 5

How many number of anodes used in electron gun

Question # 6

The magnetic field outside the solenoid due to current is

Question # 7

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 # 8

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

Question # 9

Magnetic lines of force:

Question # 10

In the region surrounding a current carrying wire:

Question # 11

The field around a moving charge is called

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

The pointer of a magnetic compass:

Question # 17

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

Question # 18

Which one of the following relations is correct?

Question # 19

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

Question # 20

The voltage increases linearly with

Question # 21

Current is measured in

Question # 22

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

Question # 23

Magnetic induction is also called as:

Question # 24

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

Question # 25

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 26

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

Question # 27

A resistance used in voltmeter is called

Question # 28

The current is measured in

Question # 29

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 30

The SI unit of flux density is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
4 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
5 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
6 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
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
9 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
10 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid

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