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

Flurescent screen is a screen where visible spot

Question # 2

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 # 3

The voltage increases linearly with

Question # 4

Which one of the following relations is correct?

Question # 5

A resistance used in voltmeter is called

Question # 6

The SI unit of magnetic flux is.

Question # 7

The field around a moving charge is called

Question # 8

The sources of magnetic field are

Question # 9

Current is measured in

Question # 10

The current sensitivity of the galvanometer is

Question # 11

Magnetic induction is also called as:

Question # 12

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

Question # 13

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 # 14

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

Question # 15

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 # 16

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 17

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 18

Avo-meter is used of measure the

Question # 19

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

Question # 20

A beam of electrons is provided by an

Question # 21

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 22

The permeability of free space is measured in:

Question # 23

In the region surrounding a current carrying wire:

Question # 24

Galvanometer is a device used for the detection of

Question # 25

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

Question # 26

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 # 27

The current is measured in

Question # 28

How many number of anodes used in electron gun

Question # 29

A current carrying conductor sets up its own:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
2 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
3 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
4 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
5 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
6 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
7 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
8 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
9 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
10 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point

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