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

magnetic field is a:

Question # 2

To convert galvanometer into ammeter we connect

Question # 3

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

Question # 4

In the region surrounding a current carrying wire:

Question # 5

The torque per unit twist of coil is called

Question # 6

The gavanometer constant of a moving coil galvanometer is given by

Question # 7

The sources of magnetic field are

Question # 8

A resistance used in galvanometer to make it voltmeter is called

Question # 9

Centripetal force for electron is given by

Question # 10

The SI unit of magnetic flux is

Question # 11

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 # 12

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 # 13

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

Question # 14

Avo-meter is used of measure the

Question # 15

The most suitable material for permanent magnet is

Question # 16

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

Question # 17

Amperean path is a:

Question # 18

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

Question # 19

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

Question # 20

The pointer of a magnetic compass:

Question # 21

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

Question # 22

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

Question # 23

Method "lamp and scale arrangement" used to measure the

Question # 24

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

Question # 25

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 26

Tesla is the unit of

Question # 27

A long wire wound tightly on a cylindrical core is called:

Question # 28

Which is modified form of galvanometer

Question # 29

The SI unit of flux density is

Question # 30

F = I(L x B) is a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
2 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
3 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
4 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
7 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
8 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v

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