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

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

Question # 2

The CRO is used for displaying the waveform of a given

Question # 3

The SI unit of magnetic flux is

Question # 4

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 5

A resistance used in galvanometer to make it voltmeter is called

Question # 6

A beam of electrons is provided by an

Question # 7

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

Question # 8

Which is modified form of galvanometer

Question # 9

Current is measured in

Question # 10

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 # 11

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 12

Galvanometer is a device used for the detection of

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

The direction of lines of force depends upon the direction of

Question # 18

In the expression of force experienced by electron, the direction of both v and B are

Question # 19

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 20

The SI unit of magnetic permeability is

Question # 21

CRO deflects the beam of

Question # 22

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 23

The current is measured in

Question # 24

A current carrying conductor sets up its own:

Question # 25

Tesla is the unit of

Question # 26

magnetic field is a:

Question # 27

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

Question # 28

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

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
2 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
3 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
4 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
5 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
6 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
7 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
8 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
9 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
10 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A

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