ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

A resistance used in galvanometer to make it voltmeter is called

Question # 2

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

Question # 3

The strength of magnetic field around the current conductor is

Question # 4

Which is modified form of galvanometer

Question # 5

F = I(L x B) is a

Question # 6

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 7

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

Question # 8

The SI unit of magnetic flux is

Question # 9

A field is uniform and much stronger:

Question # 10

The field around a moving charge is called

Question # 11

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 12

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

Question # 13

A voltmeter is used to measure the

Question # 14

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 # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
3 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
4 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
5 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
6 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
7 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
8 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
9 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
10 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter

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