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

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 2

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

Question # 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

Question # 4

Flurescent screen is a screen where visible spot

Question # 5

Magnetic lines of force:

Question # 6

Amperean path is a:

Question # 7

The SI unit of flux density is.

Question # 8

The gavanometer constant of a moving coil galvanometer is given by

Question # 9

Galvanometer is a device used for the detection of

Question # 10

In the region surrounding a current carrying wire:

Question # 11

CRO deflects the beam of

Question # 12

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

Question # 13

A solenoid is a coil of wire which is:

Question # 14

magnetic field is a:

Question # 15

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

Question # 16

Magnetic flux and flux density are related by

Question # 17

In a moving coil galvanometer, the deflecting couple depends upon

Question # 18

The SI unit of magnetic permeability is

Question # 19

Resistance is measured in

Question # 20

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

Question # 21

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

Question # 22

Which one of the following relations is correct?

Question # 23

The strength of magnetic field around the current conductor is

Question # 24

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 # 25

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 26

The SI unit of flux density is

Question # 27

Tesla is the unit of

Question # 28

NmA-1 is commonly called:

Question # 29

The sources of magnetic field are

Question # 30

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 '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
2 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
3 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
4 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
5 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
6 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
7 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
8 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
9 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
10 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical

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