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

Weber is a unit of

Question # 2

A current carrying conductor sets up its own:

Question # 3

To convert galvanometer into ammeter we connect

Question # 4

The force acting on a charge moving in a magnetic field

Question # 5

The SI unit of flux density is

Question # 6

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

Question # 7

Tesla is the unit of

Question # 8

The pointer of a magnetic compass:

Question # 9

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

Question # 10

The voltage increases linearly with

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

The sources of magnetic field are

Question # 15

Magnetic flux and flux density are related by

Question # 16

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

Question # 17

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

Question # 18

Magnetic lines of force:

Question # 19

Resistance is measured in

Question # 20

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

Question # 21

F = I(L x B) is a

Question # 22

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

Question # 23

The SI unit of flux density is.

Question # 24

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 # 25

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

Question # 26

A galvanometer is an instrument used to

Question # 27

The most suitable material for permanent magnet is

Question # 28

A resistance used in voltmeter is called

Question # 29

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 30

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
2 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
3 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
4 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
5 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
6 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
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 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
9 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
10 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them

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