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

Question # 2

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 3

The gavanometer constant of a moving coil galvanometer is given by

Question # 4

The angle of deflection of coil can be measured by the

Question # 5

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 6

NmA-1 is commonly called:

Question # 7

The vector representation of force experience give the direction of

Question # 8

Avo-meter is used of measure the

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

A solenoid is a coil of wire which is:

Question # 13

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

Question # 14

The unit of flux density is also given by

Question # 15

Magnetic induction is also called as:

Question # 16

Tesla is the unit of

Question # 17

The pointer of a magnetic compass:

Question # 18

The SI unit of magnetic permeability is

Question # 19

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

Question # 20

Which one of the following relations is correct?

Question # 21

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

Question # 22

Electron gun consist of

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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 # 27

A resistance used in voltmeter is called

Question # 28

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

Question # 29

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 30

Weber is a unit of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
2 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
3 '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
4 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
5 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
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 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
8 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
9 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
10 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these

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