ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

Centripetal force for electron is given by

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

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

Question # 4

Tesla is the unit of

Question # 5

The current is measured in

Question # 6

NmA-1 is commonly called:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The force acting on a charge moving in a magnetic field

Question # 11

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

Question # 12

Magnetic flux and flux density are related by

Question # 13

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 # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
2 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
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 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
6 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
7 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
8 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
9 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
10 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1

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