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 force acting on a charge moving in a magnetic field

Question # 2

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

Question # 3

When current passes through a solenoid coil, it behaves like a

Question # 4

A field is uniform and much stronger:

Question # 5

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

Question # 6

magnetic field is a:

Question # 7

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 8

The voltage increases linearly with

Question # 9

The CRO is used for displaying the waveform of a given

Question # 10

Amperean path is a:

Question # 11

Centripetal force for electron is given by

Question # 12

The current is measured in

Question # 13

Electron gun consist of

Question # 14

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 # 15

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

Question # 16

Magnetic flux and flux density are related by

Question # 17

The gavanometer constant of a moving coil galvanometer is given by

Question # 18

In a moving coil galvanometer, the deflecting couple depends upon

Question # 19

The vector representation of force experience give the direction of

Question # 20

The SI unit of flux density is.

Question # 21

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

Question # 22

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

Question # 23

For the conversion of galvanometer into voltmeter, we connect a

Question # 24

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

Question # 25

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 # 26

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 27

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

Question # 28

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

Question # 29

The SI unit of magnetic induction is

Question # 30

CRO deflects the beam of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
2 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
3 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
4 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
5 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
6 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
7 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
8 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
9 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
10 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these

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