Sector-35 C, Chandigarh, India - 160035.
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English
Hindi
Punjabi
Panjab University 2017
Bachelor of Science (B.Sc.)
Sector-35 C, Chandigarh, India - 160035
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Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Engineering Entrance Coaching classes
3
Engineering Entrance Exams
IIT JEE Coaching Classes
Type of class
Regular Classes
Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
3
Board
CBSE, State
CBSE Subjects taught
Physics, Chemistry
Taught in School or College
No
State Syllabus Subjects taught
Physics, Chemistry
Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
3
Board
CBSE, State
CBSE Subjects taught
Physics, Chemistry
Taught in School or College
No
State Syllabus Subjects taught
Physics, Chemistry
1. Which classes do you teach?
I teach Class 11 Tuition, Class 12 Tuition and Engineering Entrance Coaching Classes.
2. Do you provide a demo class?
Yes, I provide a free demo class.
3. How many years of experience do you have?
I have been teaching for 3 years.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
| Self induction is that phenomenon in which a change in electric current in a coil produces an induced emf in the coil itself. | |
| MATHEMATICAL REPRESENTATION: | |
| Self induced emf in a coil is directly proportional to the rate of change of electric current in the coil.i.e. | |
| Emf a – DI/Dt Or emf = -L DI/Dt Where, L = self inductance of the coil. | |
| SELF INDUCTANCE | |
| Self inductance of a coil is defined as the ratio of self-induced emf to the rate of change of current in the coil. | |
| Self inductance = emf/ DI/Dt | |
| It is denoted by ‘L’ and it depends upon the physical characteristics of the coil. Unit of self inductance is Henry.
| |
| HENRY | |
| For latest information , free computer courses and high impact notes visit : www.citycollegiate.com | |
| The self inductance of a coil is one henry if a current change of one ampere per second through it produces an emf of one volt in it. 1 henry = 1volt/1amp/sec | |
| EXPLANATION OF SELF INDUCTION | |
| Consider a coil connected to a battery through a rheostat as shown in figure. The current through the coil produces a magnetic flux which links with the coil itself. If we vary the resistance in the circuit, the current through the coil changes and the magnetic flux through the coil also change. This change in flux indicates an emf in the coil itself. Such an emf is called self-induced emf and the phenomenon is called self induction. | |
 | |
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
First Law :
Whenever the magnetic flux linked with a circuit changes, an e.m.f. is always induced in it.
or
Whenever a conductor cuts magnetic flux, an e.m.f. is induced in that conductor.
Second Law :
The magnitude of the induced e.m.f. is equal to the rate of change of flux linkages.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Lenz's Law states that, when you induce a current in a wire via a changing magnetic field, the current flows through the wire in such a direction so that its magnetic field opposes the change that produced the current.
So, what happens when you induce a current by, say, moving a wire through a magnetic field, is that you're converting mechanical energy (the energy of the wire's motion) into electrical energy (the energy carried by the induced current).
Lenz's Law ensures that the mechanical energy of the wire is reduced by the same amount of energy gained by the current. It does this by exerting a force on the wire opposing the wire's motion. This causes the wire to lose mechanical energy (its motion is impeded); it must do work against the induced magnetic field to generate current.
To make this a little more concrete, let's imagine a fictitious universe where Lenz's Law doesn't apply; i.e. a universe in which there's no force generated on the wire at all, despite the induced current.
In this fictitious universe, imagine that you give the wire one unit of mechanical energy. As the wire passes through a magnetic field, a current appears in the wire that also carries one unit of energy. But since no opposing force is generated, no mechanical energy is lost; the wire still has its original one unit of mechanical energy. Which means that the wire now has two units of total energy (one electrical; one mechanical). You've created energy from nothing!
In the real universe, Lenz's Law ensures that, if the electrical energy gained is one unit then the mechanical energy lost is also one unit, so that the net energy gain of the wire is zero. Energy is conserved.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Modulation index(m) is basically the ratio of peak voltage of modulating signal and peak voltage of carrier signal and amplitude modulation could be thought of as superimposition of modulations signal on the carrier. So when m is greater than one, over-modulation occurs and the modulating signal being of greater amplitude,part of its information is lost in the process of modulation which is undesirable. The resulting waveform looks like below, the gaps indicating part of modulating signal that is lost.
Hence its modulation index is kept below 1.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Of course! Any type of particle or wave that is in motion carries momentum; either linear or angular, depending on the motion of the particle or wave.
For example, an electron would have angular momentum as it revolves around the nucleus of an atom while a photon would have linear momentum as it travels from this screen onto your retina.
The exact value of the momentum of a wave was given by Louis De Broglie in his De Broglie Equation in 1924 which says that:
pλ=hpλ=h
or
λ=hpλ=hp
Where λ is the wavelength of the wave, p is the momentum of the wave and h is Planck’s Constant (h=2π?h=2π?)
Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Engineering Entrance Coaching classes
3
Engineering Entrance Exams
IIT JEE Coaching Classes
Type of class
Regular Classes
Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
3
Board
CBSE, State
CBSE Subjects taught
Physics, Chemistry
Taught in School or College
No
State Syllabus Subjects taught
Physics, Chemistry
Class Location
Online (video chat via skype, google hangout etc)
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
3
Board
CBSE, State
CBSE Subjects taught
Physics, Chemistry
Taught in School or College
No
State Syllabus Subjects taught
Physics, Chemistry
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
| Self induction is that phenomenon in which a change in electric current in a coil produces an induced emf in the coil itself. | |
| MATHEMATICAL REPRESENTATION: | |
| Self induced emf in a coil is directly proportional to the rate of change of electric current in the coil.i.e. | |
| Emf a – DI/Dt Or emf = -L DI/Dt Where, L = self inductance of the coil. | |
| SELF INDUCTANCE | |
| Self inductance of a coil is defined as the ratio of self-induced emf to the rate of change of current in the coil. | |
| Self inductance = emf/ DI/Dt | |
| It is denoted by ‘L’ and it depends upon the physical characteristics of the coil. Unit of self inductance is Henry.
| |
| HENRY | |
| For latest information , free computer courses and high impact notes visit : www.citycollegiate.com | |
| The self inductance of a coil is one henry if a current change of one ampere per second through it produces an emf of one volt in it. 1 henry = 1volt/1amp/sec | |
| EXPLANATION OF SELF INDUCTION | |
| Consider a coil connected to a battery through a rheostat as shown in figure. The current through the coil produces a magnetic flux which links with the coil itself. If we vary the resistance in the circuit, the current through the coil changes and the magnetic flux through the coil also change. This change in flux indicates an emf in the coil itself. Such an emf is called self-induced emf and the phenomenon is called self induction. | |
| | |
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
First Law :
Whenever the magnetic flux linked with a circuit changes, an e.m.f. is always induced in it.
or
Whenever a conductor cuts magnetic flux, an e.m.f. is induced in that conductor.
Second Law :
The magnitude of the induced e.m.f. is equal to the rate of change of flux linkages.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Lenz's Law states that, when you induce a current in a wire via a changing magnetic field, the current flows through the wire in such a direction so that its magnetic field opposes the change that produced the current.
So, what happens when you induce a current by, say, moving a wire through a magnetic field, is that you're converting mechanical energy (the energy of the wire's motion) into electrical energy (the energy carried by the induced current).
Lenz's Law ensures that the mechanical energy of the wire is reduced by the same amount of energy gained by the current. It does this by exerting a force on the wire opposing the wire's motion. This causes the wire to lose mechanical energy (its motion is impeded); it must do work against the induced magnetic field to generate current.
To make this a little more concrete, let's imagine a fictitious universe where Lenz's Law doesn't apply; i.e. a universe in which there's no force generated on the wire at all, despite the induced current.
In this fictitious universe, imagine that you give the wire one unit of mechanical energy. As the wire passes through a magnetic field, a current appears in the wire that also carries one unit of energy. But since no opposing force is generated, no mechanical energy is lost; the wire still has its original one unit of mechanical energy. Which means that the wire now has two units of total energy (one electrical; one mechanical). You've created energy from nothing!
In the real universe, Lenz's Law ensures that, if the electrical energy gained is one unit then the mechanical energy lost is also one unit, so that the net energy gain of the wire is zero. Energy is conserved.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Modulation index(m) is basically the ratio of peak voltage of modulating signal and peak voltage of carrier signal and amplitude modulation could be thought of as superimposition of modulations signal on the carrier. So when m is greater than one, over-modulation occurs and the modulating signal being of greater amplitude,part of its information is lost in the process of modulation which is undesirable. The resulting waveform looks like below, the gaps indicating part of modulating signal that is lost.
Hence its modulation index is kept below 1.
Answered on 07/01/2018 Learn CBSE/Class 12/Science/Physics
Of course! Any type of particle or wave that is in motion carries momentum; either linear or angular, depending on the motion of the particle or wave.
For example, an electron would have angular momentum as it revolves around the nucleus of an atom while a photon would have linear momentum as it travels from this screen onto your retina.
The exact value of the momentum of a wave was given by Louis De Broglie in his De Broglie Equation in 1924 which says that:
pλ=hpλ=h
or
λ=hpλ=hp
Where λ is the wavelength of the wave, p is the momentum of the wave and h is Planck’s Constant (h=2π?h=2π?)
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