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

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

Question # 2

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 # 3

The torque per unit twist of coil is called

Question # 4

Ammeter is used to measure

Question # 5

The permeability of free space is measured in:

Question # 6

The SI unit of magnetic permeability is

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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 # 11

In the region surrounding a current carrying wire:

Question # 12

Magnetic flux and flux density are related by

Question # 13

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

Question # 14

Weber is a unit of

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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 # 19

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 # 20

A voltmeter is used to measure the

Question # 21

Flurescent screen is a screen where visible spot

Question # 22

The sources of magnetic field are

Question # 23

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

Question # 24

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

Question # 25

Resistance is measured in

Question # 26

The force acting on a charge moving in a magnetic field

Question # 27

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

Question # 28

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 # 29

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

Question # 30

The field around a moving charge is called

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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 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
3 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
4 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
5 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
6 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
7 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
8 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
9 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
10 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
A. 5N
B. 4N
C. 1.5N
D. 6N

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