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

Centripetal force for electron is given by

Question # 2

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

Question # 3

In the formula B= µ̻ nl, the symbol n denotes:

Question # 4

Flurescent screen is a screen where visible spot

Question # 5

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 # 6

Avo-meter is used of measure the

Question # 7

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

Question # 8

Method "lamp and scale arrangement" used to measure the

Question # 9

Which is modified form of galvanometer

Question # 10

The gavanometer constant of a moving coil galvanometer is given by

Question # 11

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

Question # 12

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

Question # 13

A galvanometer is an instrument used to

Question # 14

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

Question # 15

The SI unit of flux density is

Question # 16

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

Question # 17

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

Question # 18

The most suitable material for permanent magnet is

Question # 19

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

Question # 20

The current sensitivity of the galvanometer is

Question # 21

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

Question # 22

Magnetic flux and flux density are related by

Question # 23

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

Question # 24

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

Question # 25

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 # 26

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 27

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

Question # 28

How many number of anodes used in electron gun

Question # 29

A voltmeter is used to measure the

Question # 30

The field around a moving charge is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
2 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
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 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
5 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
6 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
7 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
8 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
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 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current

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