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 magnetic field in the middle of a solenoid due to current is

Question # 2

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 3

The field around a moving charge is called

Question # 4

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 # 5

A voltmeter is used to measure the

Question # 6

The strength of magnetic field around the current conductor is

Question # 7

Resistance is measured in

Question # 8

A resistance used in voltmeter is called

Question # 9

Method "lamp and scale arrangement" used to measure the

Question # 10

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

Question # 11

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 # 12

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 13

The SI unit of magnetic induction is

Question # 14

The current sensitivity of the galvanometer is

Question # 15

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

Question # 16

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

Question # 17

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 # 18

The angle of deflection of coil can be measured by the

Question # 19

A charged particle moving at right angle to the magnetic field will experience

Question # 20

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

Question # 21

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 # 22

A field is uniform and much stronger:

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

The current is measured in

Question # 27

For the conversion of galvanometer into voltmeter, we connect a

Question # 28

The unit of magnetic flux is

Question # 29

To convert galvanometer into ammeter we connect

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
2 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
3 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
4 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
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 field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
8 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
9 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
10 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2

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