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

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

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

CRO deflects the beam of

Question # 4

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 # 5

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

Question # 6

A resistance used in galvanometer to make it voltmeter is called

Question # 7

A voltmeter is used to measure the

Question # 8

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 # 9

The gavanometer constant of a moving coil galvanometer is given by

Question # 10

Which one of the following relations is correct?

Question # 11

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 12

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

Question # 13

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 14

Method "lamp and scale arrangement" used to measure the

Question # 15

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 # 16

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 17

The pointer of a magnetic compass:

Question # 18

The direction of lines of force depends upon the direction of

Question # 19

The SI unit of magnetic induction is

Question # 20

NmA-1 is commonly called:

Question # 21

The SI unit of flux density is

Question # 22

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

Question # 23

Magnetic flux and flux density are related by

Question # 24

The torque per unit twist of coil is called

Question # 25

magnetic field is a:

Question # 26

Magnetic induction is also called as:

Question # 27

Avo-meter is used of measure the

Question # 28

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
4 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
5 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
6 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
7 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
8 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
9 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)
10 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these

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