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 flux density is.

Question # 2

The SI unit of magnetic induction is

Question # 3

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

Question # 4

Magnetic flux and flux density are related by

Question # 5

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

Question # 6

Tesla is the unit of

Question # 7

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 8

It is customary represent a current flowing towards the reader by a symbol

Question # 9

The current sensitivity of the galvanometer is

Question # 10

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 # 11

The CRO is used for displaying the waveform of a given

Question # 12

Current is measured in

Question # 13

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 14

Electron gun consist of

Question # 15

A voltmeter is used to measure the

Question # 16

The SI unit of magnetic permeability is

Question # 17

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

Question # 18

Which is modified form of galvanometer

Question # 19

The angle of deflection of coil can be measured by the

Question # 20

Which one of the following relations is correct?

Question # 21

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

Question # 22

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 23

The strength of magnetic field around the current conductor is

Question # 24

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

Question # 25

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

Question # 26

The sources of magnetic field are

Question # 27

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 # 28

When current passes through a solenoid coil, it behaves like a

Question # 29

Lorentz force is defined as

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
2 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
3 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
4 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
5 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
6 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)
7 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
8 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
9 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
10 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

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