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 CRO deflects the beam of electrons, when they passes through uniform

Question # 2

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

Question # 3

A galvanometer is an instrument used to

Question # 4

A resistance used in galvanometer to make it voltmeter is called

Question # 5

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

Question # 6

The direction of lines of force depends upon the direction of

Question # 7

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

Question # 8

Lorentz force is defined as

Question # 9

The magnetic field inside a solenoid can be increased by:

Question # 10

The SI unit of flux density is.

Question # 11

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

Question # 12

The current is measured in

Question # 13

Centripetal force for electron is given by

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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 # 19

Magnetic flux and flux density are related by

Question # 20

Which is modified form of galvanometer

Question # 21

Electron gun consist of

Question # 22

The SI unit of magnetic permeability is

Question # 23

The field around a moving charge is called

Question # 24

The unit of magnetic flux is

Question # 25

Current is measured in

Question # 26

The SI unit of magnetic flux is.

Question # 27

Magnetic lines of force:

Question # 28

A resistance used in voltmeter is called

Question # 29

The gavanometer constant of a moving coil galvanometer is given by

Question # 30

NmA-1 is commonly called:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
2 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
3 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
4 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
5 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
6 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
7 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
8 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
9 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
10 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

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