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

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

Question # 2

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

Question # 3

The sources of magnetic field are

Question # 4

magnetic field is a:

Question # 5

Strength of magnetic field is measured in SI units, in:

Question # 6

Amperean path is a:

Question # 7

Which is modified form of galvanometer

Question # 8

In the region surrounding a current carrying wire:

Question # 9

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

Question # 10

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 11

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

Question # 12

The force acting on a charge moving in a magnetic field

Question # 13

Ammeter is used to measure

Question # 14

Lorentz force is defined as

Question # 15

Weber is a unit of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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)
2 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
3 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
4 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
7 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
8 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
9 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
10 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

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