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

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 # 2

The force experienced by charged particle is maximum, if it moves

Question # 3

The torque per unit twist of coil is called

Question # 4

The sources of magnetic field are

Question # 5

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 6

The SI unit of magnetic induction is tesla which is equal to

Question # 7

Flurescent screen is a screen where visible spot

Question # 8

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

Question # 9

The CRO deflects the beam of electrons, when they passes through uniform

Question # 10

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

Question # 11

A long wire wound tightly on a cylindrical core is called:

Question # 12

A solenoid is a coil of wire which is:

Question # 13

A charged particle moving at right angle to the magnetic field will experience

Question # 14

In the region surrounding a current carrying wire:

Question # 15

The unit of magnetic flux is

Question # 16

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

Question # 17

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

Question # 18

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 19

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 20

The most suitable material for permanent magnet is

Question # 21

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 # 22

A resistance used in voltmeter is called

Question # 23

The SI unit of flux density is

Question # 24

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

Question # 25

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

Question # 26

The SI unit of flux density is.

Question # 27

The SI unit of magnetic permeability is

Question # 28

The magnetic field inside a solenoid can be increased by:

Question # 29

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

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 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
2 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
3 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
4 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
5 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
6 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
7 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
8 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
9 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
10 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb

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