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

F = I(L x B) is a

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

CRO deflects the beam of

Question # 4

The sources of magnetic field are

Question # 5

The gavanometer constant of a moving coil galvanometer is given by

Question # 6

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 7

The magnetic field outside the solenoid due to current is

Question # 8

A galvanometer is an instrument used to

Question # 9

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

Question # 10

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

Question # 11

Weber is a unit of

Question # 12

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 # 13

Magnetic induction is also called as:

Question # 14

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

Question # 15

A beam of electrons is provided by an

Question # 16

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

Question # 17

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 18

Which one of the following relations is correct?

Question # 19

Method "lamp and scale arrangement" used to measure the

Question # 20

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

Question # 21

The CRO is used for displaying the waveform of a given

Question # 22

A voltmeter is used to measure the

Question # 23

Electron gun consist of

Question # 24

The pointer of a magnetic compass:

Question # 25

The direction of lines of force depends upon the direction of

Question # 26

The magnetic field inside a solenoid can be increased by:

Question # 27

Tesla is the unit of

Question # 28

The permeability of free space is measured in:

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
2 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
3 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
4 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
5 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
6 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
7 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
8 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
9 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
10 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2

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