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 current passes through a solenoid coil, it behaves like a

Question # 2

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

Question # 3

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

Question # 4

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 5

A galvanometer is an instrument used to

Question # 6

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

Question # 7

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

Question # 8

For the conversion of galvanometer into voltmeter, we connect a

Question # 9

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

Question # 10

A solenoid is a coil of wire which is:

Question # 11

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

Question # 12

The unit of magnetic flux is

Question # 13

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

Question # 14

Resistance is measured in

Question # 15

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

Question # 16

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 17

The sources of magnetic field are

Question # 18

In a moving coil galvanometer, the deflecting couple depends upon

Question # 19

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

Question # 20

A resistance used in galvanometer to make it voltmeter is called

Question # 21

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 22

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

Question # 23

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 24

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

Question # 25

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 26

The voltage increases linearly with

Question # 27

The current is measured in

Question # 28

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 29

Lorentz force is defined as

Question # 30

The SI unit of magnetic permeability is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
3 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
4 '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
5

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
6 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
7 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
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 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
10 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2

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