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 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 # 2

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 # 3

The sources of magnetic field are

Question # 4

Tesla is the unit of

Question # 5

magnetic field is a:

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 direction of lines of force depends upon the direction of

Question # 8

Weber is a unit of

Question # 9

Resistance is measured in

Question # 10

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

Question # 11

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

Question # 12

Magnetic flux and flux density are related by

Question # 13

Lorentz force is defined as

Question # 14

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 # 15

The permeability of free space is measured in:

Question # 16

CRO deflects the beam of

Question # 17

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 18

Magnetic induction is also called as:

Question # 19

F = I(L x B) is a

Question # 20

Galvanometer is a device used for the detection of

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

When current passes through a solenoid coil, it behaves like a

Question # 25

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

Question # 26

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

Question # 27

Avo-meter is used of measure the

Question # 28

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

Question # 29

A charged particle moving at right angle to the magnetic field will experience

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
4 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
5 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
6 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
7 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
8 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
9 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
10 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter

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