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 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 # 2

The gavanometer constant of a moving coil galvanometer is given by

Question # 3

Flurescent screen is a screen where visible spot

Question # 4

The unit of flux density is also given by

Question # 5

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

Question # 6

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 7

For the conversion of galvanometer into voltmeter, we connect a

Question # 8

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

Question # 9

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 10

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

Question # 11

The voltage increases linearly with

Question # 12

The permeability of free space is measured in:

Question # 13

A voltmeter is used to measure the

Question # 14

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 15

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 # 16

To convert galvanometer into ammeter we connect

Question # 17

A resistance used in voltmeter is called

Question # 18

The SI unit of flux density is

Question # 19

CRO deflects the beam of

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

A beam of electrons is provided by an

Question # 26

Lorentz force is defined as

Question # 27

Current is measured in

Question # 28

Magnetic flux and flux density are related by

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
2 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
3 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
4 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
5

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
6 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
7 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
8 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
9 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
10 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current

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