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 SI unit of magnetic flux is.

Question # 2

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

Question # 3

In a moving coil galvanometer, the deflecting couple depends upon

Question # 4

The permeability of free space is measured in:

Question # 5

Galvanometer is a device used for the detection of

Question # 6

Magnetic induction is also called as:

Question # 7

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 8

A galvanometer is an instrument used to

Question # 9

A beam of electrons is provided by an

Question # 10

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

Question # 11

A resistance used in galvanometer to make it voltmeter is called

Question # 12

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

Question # 13

Flurescent screen is a screen where visible spot

Question # 14

A field is uniform and much stronger:

Question # 15

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

Question # 16

CRO deflects the beam of

Question # 17

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 18

The pointer of a magnetic compass:

Question # 19

The magnetic field inside a solenoid can be increased by:

Question # 20

The SI unit of flux density is.

Question # 21

Lorentz force is defined as

Question # 22

Tesla is the unit of

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

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 25

Current is measured in

Question # 26

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

Question # 27

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 # 28

In the region surrounding a current carrying wire:

Question # 29

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

Question # 30

The force acting on a charge moving in a magnetic field

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
2 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
3 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
4 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
5 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
6 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
7 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
8 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
9 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
10 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical

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