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

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 # 2

Ammeter is used to measure

Question # 3

Magnetic flux and flux density are related by

Question # 4

The strength of magnetic field around the current conductor is

Question # 5

Current is measured in

Question # 6

The SI unit of flux density is.

Question # 7

Magnetic lines of force:

Question # 8

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 9

A solenoid is a coil of wire which is:

Question # 10

magnetic field is a:

Question # 11

Tesla is the unit of

Question # 12

The most suitable material for permanent magnet is

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 15

The current sensitivity of the galvanometer is

Question # 16

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

Question # 17

The gavanometer constant of a moving coil galvanometer is given by

Question # 18

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

Question # 19

A resistance used in voltmeter is called

Question # 20

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 21

The sources of magnetic field are

Question # 22

NmA-1 is commonly called:

Question # 23

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

Question # 24

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 # 25

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

Question # 26

A field is uniform and much stronger:

Question # 27

Which one of the following relations is correct?

Question # 28

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 # 29

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

Question # 30

The direction of lines of force depends upon the direction of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
3 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
4 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
5 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
6 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
7 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
8 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
9 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
10 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron

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