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

Tesla is the unit of

Question # 2

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

Question # 3

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

Question # 4

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 5

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

Question # 6

The voltage increases linearly with

Question # 7

The vector representation of force experience give the direction of

Question # 8

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 9

NmA-1 is commonly called:

Question # 10

The magnetic field in the middle of a solenoid due to current is

Question # 11

A beam of electrons is provided by an

Question # 12

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

Question # 13

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

Question # 14

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 15

A resistance used in voltmeter is called

Question # 16

F = I(L x B) is a

Question # 17

The permeability of free space is measured in:

Question # 18

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

Question # 19

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

Question # 20

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 21

Magnetic lines of force:

Question # 22

magnetic field is a:

Question # 23

The torque per unit twist of coil is called

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 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 # 26

The unit of magnetic flux is

Question # 27

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

Question # 28

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

Question # 29

A solenoid is a coil of wire which is:

Question # 30

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
4 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
5 A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
6 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
7 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
8 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
9 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
10 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A

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