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

The angle of deflection of coil can be measured by the

Question # 2

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

Question # 3

NmA-1 is commonly called:

Question # 4

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

Question # 5

The CRO is used for displaying the waveform of a given

Question # 6

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 # 7

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

Question # 8

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

Question # 9

The current is measured in

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

Centripetal force for electron is given by

Question # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

How many number of anodes used in electron gun

Question # 16

Galvanometer is a device used for the detection of

Question # 17

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 18

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

Question # 19

Magnetic induction is also called as:

Question # 20

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

Question # 21

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 22

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 23

The field around a moving charge is called

Question # 24

magnetic field is a:

Question # 25

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

Question # 26

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

Question # 27

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 28

To convert galvanometer into ammeter we connect

Question # 29

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
2 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
3 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
4 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
5 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
6 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
7 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
8 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
9 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
10 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

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