Faraday's laws of induction describe how a changing magnetic field can generate an electric current in a conductor. Michael Faraday discovered this phenomenon of electromagnetic induction in 1830 through experiments where he observed a current induced in a coil of wire when a magnet was moved toward or away from the coil. Faraday formulated two laws: (1) a changing magnetic field induces an electromotive force in any nearby conductor, and (2) the induced electromotive force is proportional to the rate of change of the magnetic flux through the circuit. These laws form the basis for many technologies that generate electricity including transformers, induction cooktops, generators, and wireless charging systems.
this is my investigatory file I made for class XII on the topic electromagnetic induction (EMI).there 2 document with same name 1 is in pdf and another one is in docx.
this is my investigatory file I made for class XII on the topic electromagnetic induction (EMI).there 2 document with same name 1 is in pdf and another one is in docx.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...NelTorrente
In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
2. Group
Members
• Ghazi Zain Ul Abidin
• Khawaja Sinan Aamir
• Hasnain Ali Shaikh
• Hilal Haider
• Huzaifa Rehman
• Ismail Ibrahim
• Jawad Ahmed
• Mehmood
4. Revision Of Concepts
• Magnetic Flux
Measurement of the total magnetic field lines which passes through a given area
• Magnetic Flux Density
Magnetic flux density(B) is defined as the force acting per unit current per unit length on a wire placed at right angles to
the magnetic field or Region in which a moving charge experiences a force provided that the charge is not moving parallel
to the field lines
• Current
Stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.
01
5. Faraday’s Law of Induction describes how an
electric current can produce magnetic field and,
conversely, how a changing magnetic field can
generate electric current in a conductor. English
physicist Michael Faraday discovered magnetic
induction in 1830; however, an American
physicist, Joseph Henry is also known for his
independent efforts on same discovery according
to the University of Texas.
02
6. Experiment
• The discovery of
electromagnetic induction was
based on series of experiments
carried out by Faraday
• In this experiment, Faraday
takes a magnet and a coil
and connects a galvanometer
across the coil
03
7. Experiment
The result showed the following behavior
Position Of Magnet Deflection Of Galvanometer
Magnet At Rest No deflection in galvanometer
The magnet move towards the coil Deflection In galvanometer in one direction
The magnet is held stationery at the same position (near coil) No deflection in galvanometer
The magnet move away from the coil Deflection In galvanometer in opposite direction
The magnet held stationery at the same position (away from the coil) No deflection in galvanometer
04
8. First Law
From The experiment he stated
"A changing magnetic field induced an
electromotive force in a conductor"
Whenever a conductor is placed in a varying
magnetic field, an electromotive force is induced.
Likewise, if the conductor circuit is closed, a current is
induced, which is called induced current
05
9. Causes Of
Induction
The experiment showed that
the induction can be introduced
by;
• moving a magnet towards or
away from the coil
• moving the coil into or out of
the magnetic field
• changing the area of a coil
placed in the magnetic field
• rotating the coil relative to
the magnet
06
10. Second Law
He further stated his second law as
"The induced voltage in a circuit is proportional to
the rate of change over time of the magnetic flux
through that circuit."
Mathematically
EMF = −NΔΦ/Δt
The negative sign shows that the direction of induced
emf is such that it opposes the change in flux
The direction of induced emf is given by Lenz’s law,
"An induced electric current flows in a direction such
that the current opposes the change that induced
it."
07
11. Derivation
Consider a magnet approaching towards a coil. Consider two-time instances T1 and T2.
Flux linkage with the coil at the time T1 is given by
T1 = NΦ1
Flux linkage with the coil at the time T2 is given by
T2 = NΦ2
Change in the flux linkage is given by
N(Φ2 – Φ1)
Let us consider this change in flux as
Φ = Φ2 – Φ1
Hence, the change in flux linkage is given by
08
12. Derivation
NΦ
The rate of change of flux linkage is given by
NΦ/t
Taking the derivative of the above equation, we get
N dΦ/dt
According to Faraday’s second law of electromagnetic induction, we know that the induced emf in a coil is equal to
the rate of change of flux linkage. Therefore,
E=Ndϕ/dt
Considering Lenz’s law,
E=−Ndϕ/dt
09
13. Second Law
The derived formula shows
that the induction can
be changed by;
• changing the number of
turns in the coil i.e., N
• changing magnetic field
strength i.e., B
• changing the speed of the
relative motion between
the coil and the magnet
10
14. Applications
Faraday law is one of the most basic and important
laws of electromagnetism. This law finds its
application in most of the electrical machines,
industries, and the medical field, etc.
11
15. Transformer
Transformer is a device used in power transmission
of electric energy
There are two coils primary and
secondary on the transformer core. The core
laminations are joined in the form of strips. The two
coils have high mutual inductance. When
an alternating current pass through the primary coil
it creates a varying magnetic flux. As per Faraday’s
law, this change in magnetic flux induces an
EMF (electromotive force) in the secondary
coil which is linked to the core having a primary coil.
There are two types of transformers, step up and
step down.
12
16. Induction
Cooker
The Induction cooker is the
fastest way of cooking. It
also works on the principle of
mutual induction. When
current flows through the coil
of copper wire placed below a
cooking container, it produces
a changing magnetic field.
This alternating or changing
magnetic field induces an emf
and hence the current in the
conductive container due to
which heat is produced.
13
17. Seismometer
A device used for the measurement and
detection of earthquake is called seismometer.
This kind of seismometer works on the principle
of electromagnetic induction. It transforms
received vibrational energy into an
electrical voltage. During earthquake, the
relative motion between a magnet and a coil
induces an emf in the coil that is proportional to
the velocity of the relative’s motion. The
magnitude of emf is also proportional to
the strength of the magnet used and the
number of turns in the coil.
In practice either the magnet or the coil can be
attached to the inertial mass (in commercial
systems the magnet is itself often used as
the inertial mass).
14
18. Electricity Generator
AC generator converts mechanical energy
into electrical energy. Its input supply is
mechanical energy and outputs alternating
electrical power in the form of alternating
voltage and current.
The armature rotates between the poles of
the magnet upon an axis perpendicular to
the magnetic field, the flux which links with
the armature changes continuously. An emf
is induced in the armature which produces
a current through the slip rings and brushes.
The galvanometer swings between the
positive and negative values. This indicates
that there is an alternating current flowing
through the galvanometer.
15
19. Current Clamp &
Wireless Charging
• A current clamp measures electric current flowing
through a wire, cable, busbar, or other conductor
without cutting the wire through electromagnetic
induction.
• Wireless charging works by transferring energy
from the charger to a receiver in the back of the
phone via electromagnet.
16