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Electric generator (A.C. & D.C.) | Magnetic effects of current | Khan Academy

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Electric generator (A.C. & D.C.) | Magnetic effects of current | Khan Academy

Let's learn how A.C. and D.C. generators (electric generators) work.
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Electric generator (A.C. & D.C.) (Hindi) | Magnetic effects of current | Physics | Khan Academy

Using simple animation let's learn how A.C. and D.C. generators (electric generators) work.
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AC Generator DC Generator & Electric Motor

AC Generator
The major parts of an AC generator are armature coil, field magnet, slip rings, brushes etc. The magnet, which produces magnetic flux in generator, is called field magnet. The direction of flux lines is from North Pole of the field magnet to South Pole.
An armature is a coil at which insulated conducting wire is wound over a laminated soft iron core. The slip rings are circular rings; fused to the ends of the coil. They rotate about the same axis as that of the armature. Brush is an arrangement that is always in contact with slip rings. Current flows to the external circuit through this.
Armature coil rotates continuously using mechanical energy. Simultaneously armature coil deflects the magnetic flux lines and emf is generated in the coil. This continuous motion of the armature coil helps to keep a constant current in the external circuit.
Let’s see the different steps in one complete rotation of the armature coil.
When the armature coil starts rotation, the angle between the axis of the coil and direction of flux be 00.There is no emf is induced in it because of no flux change. After that, the rotation of the armature coil cuts more flux lines and due to this the angle between the axis of the coil and flux becomes 900.Then maximum emf is induced in it. When the coil turns to 1800 with the flux lines, then also the emf becomes zero. When the angle turns from 1800 to 2700 then the direction of flux change become opposite, so the maximum emf is produced in opposite direction. When the coil turns from 2700 to 3600 ,the rate of flux changes reduced to zero and thus emf.
The number of cycles in one second is called the frequency of AC. The unit of frequency is hertz. The frequency of AC used in our house is 50Hz.
DC Generators
As in AC generator, the dc generator also has a field magnet and an armature coil. In dc generators the slip rings are replaced by split rings. In dc generators also, the emf induced by the armature coil is AC in nature. This emf is converted into DC using split ring commutator. The current flows to the external circuit through the graphite brush, is unidirectional.
Let’s see the difference between the emf from a dc generator and a battery.
The emf from battery is of constant intensity and without any fluctuations. But the emf from the dc source is pulsating.
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AC Generator || 3D Animation Video || 3D video

A.C. generators or alternators (as they are usually called) operate on the same fundamental principles of electromagnetic induction as D.C. generators.
Alternating voltage may be generated by rotating a coil in the magnetic field or by rotating a magnetic field within a stationary coil. The value of the voltage generated depends on-
the number of turns in the coil.
strength of the field.
the speed at which the coil or magnetic field rotates.
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ELECTRIC GENERATOR (AC & DC) | AC generator working principle | SS Academy

ELECTRIC GENERATOR (A.C. & D.C.) | AC Generator Working Principle | SS Academy
Rizwana Sarwar
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AC and DC generators -
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A slip ring is a continuous ring, whereas a commutator is segmented. Slip rings provide a continuous transfer of power, signals, or data.  Brushes and slip rings arrangement is shown for an AC generator. Each ring is connected to one wire only. 

Commutator is a device/attachment for reversing the direction of flow of electric current through which electrical connection is made and which ensures the current flows as direct current. Also known as split ring as it has a gap, a commutator reverses the direction of the current every 180º and so the output is DC

Peak emf can be deduced from the equation written below :
According to Faraday's law of Electromagnetic induction, induced emf is equal to rate of change of flux linkage.
This was derived from the equation given below:
E = BANωsinθ
E= BANωsin(ωt)

Emf will have its peak value at angle theta = 90 degrees.

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Working Principle of AC Generator | [Electric Machine #2]

Have you ever think about Working Principle of AC Generator?, and What are Basic Parts of AC generator? This video gives you answers to these questions with animation of elementary model of AC generator.

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GENERATOR EFFECT:

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=================================================
CONTENT:

- Basic components of AC generator: 00:39
Armature, Shaft, North and South poles, Slip rings, Brushes
- Working Principle of DC generator: 02:06
- Direction of induced current: 02:40
Fleming's right hand rule:
- Graphical representation: 05:20
Hoe induced EMF changes over time
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Electric Generator (DC Generator) - Magnetic Effects of Electric Current | Class 10 Physics

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Class: 10th
Subject: Physics
Chapter: Magnetic Effects Of Electric Current
Topic Name: Electric Generator (DC Generator) (4.27)
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Working Principle of DC Generator | [Electric Machine #1]

Have you ever think about Working Principle of DC Generator?, and What are Basic Parts of DC generator? This video gives you answers to these questions with animation of elementary model of DC generator.

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#dcgenerator #generatorworkingprinciple #physicsscience
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CONTENT:

- Basic parts of DC generator: 00:29
- Working Principle of DC generator: 01:43
- Fleming's right hand rule: 04:13
- Graphical representation: 05:20
- Advanteges and applications: 06:23

DEFINITION:
A DC generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced EMF.

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Faraday's Law for generating electricity | Physics | Khan Academy

How Faraday's Law is used to generate electricity in turbines.

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Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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ElectroMagnetic Induction 09 II A.C Generator - Working of A.C Generator and a Famous Story JEE/NEET

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How AC Generator Produces Electricity? - Physics || Extramarks

Do You Know How AC Generator produces electricity, what are the fundamentals of AC Generator and how AC generator is made? Get all the answers of these above questions in this video of Extramarks.

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WORKING OF AC AND DC GENERATOR | MAGNETIC EFFECT OF E CURRENT - PART 4

WORKING OF AC AND DC GENERATOR, MAGNETIC EFFECTS OF ELECTRIC CURRENT.. DIFFERENCE BETWEEN AC AND DC CURRENT, ADVANTAGES AND DISADVANTAGES OF ALTERNATING AND DIRECT CURRENT
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Electric motor (Hindi) | Magnetic effect of electric current | Physics | Khan Academy

Let's learn the working of an electric motor, which converts electricity into a rotation.
Ready to learn the next topic?

Class 10 Physics on Khan Academy: Let's explore the mysteries of light and electricity. From how light reflects, to correcting defects in our eyes. From understanding charges, to lighting up cities. From Newton's prism to Faraday's generator, it's all there.
So by taking this course, we will master the topics of (but not limited to) class 10th NCERT physics.

About Khan Academy: Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
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Electric Generator

CBSE class 10 Science - Magnetic Effects of Electric Current - Working of Electric Generator is based on the principle of Fleming's Right hand rule.
The current whose direction reverses with the movement of the coil is known as the alternating current. Most appliances use Alternating Current.

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Understand the Working and Construction of an AC Generator | CBSE Class 10 Physics| Vedantu 9 and 10

AC Generator | Construction of AC Generator | Working of AC Generator | Electric Generator Class 10 | Principle of AC Generator | AC Generator Working Principle | AC and DC Generator | Working of AC Generator Class 10 | Types of AC Generator | AC Generator Class 10 | AC DC Generator | Principle of Electric Generator Class 10 | AC Generator Motor | Generator | Electric Generator | Principle of AC Generator Class 10 | Physics Class 10 | Working of Electric Generator Class 10 Notes

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GCSE Science Revision Physics The Alternator and Dynamo (Triple)

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In this video, we look at how an alternator produces an alternating current (AC) and how a dynamo produces a direct current (DC).

Image credits:

Ernest Rutherford


Ernest Marsden
S P Andrew Ltd (1921)


Music credit: Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (
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GCSE Physics - Generator Effect / Electromagnetic Induction #81

This video covers:
- The idea that the movement of a wire within a magnetic field induces a potential difference, and that this may lead to a current if the circuit is complete
- How we can increase the size of the current
- What happens when we place a magnet inside a coil

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Effects of Electric Current Class 10 SSC || Lecture 7 || AC Generator || Maharashtra state board

Let us learn what is Electromagnetic Induction. Fleming's Right Hand Rule. We shall also learn how an AC generator works.
Effects of Electric Current Class 10 SSC. Maharashtra State Board.

02:07 - Electromagnetic Induction
10:20 - Fleming's Right Hand Rule
13:01 - AC vs DC
14:55 - AC Generator

Lecture 1 :
Lecture 2 :
Lecture 3 :
Lecture 4 :
Lecture 5 :
Lecture 6 :

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Physics Simple Model of AC Generator - Magnetic Effects of Electric Current Part 11 English

This Physics video explains the Simple Model of AC Generator .This video is meant for students studying in class 9 and 10 in CBSE/NCERT and other state boards.
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#acgenerator |AC Generator|Electric Generator|Magnetic Effects of Current|Class 10th|Science|NCERT|

#acgenerator |AC Generator|Electric Generator|Magnetic Effects of Current|Class 10th|Science|NCERT|

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