Class notes

electromagnetic induction class notes

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Course
Physics

Institution
Physics

it covers most important topics to score high on exams like electromagnetic induction, EMI, induced emf, magnetic flux. weber ,experiments of faraday and henry, current induced by a magnet, current induced by current. current induced by changing current, faradays law, lenzs law, energy conservation...

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Uploaded on November 15, 2022
Number of pages 19
Written in 2022/2023
Type Class notes
Professor(s) Salma
Contains All classes

electromagnetic induction
emi
induced emf
magnetic flux
weber
faradays law
experiments of faraday and henry
current induced by a magnet
current induced by current
current induced by changing current
l

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Electromagnetic Induction

Eleetomagnetie Tnetuchion CEMI)
cwnant ano
The phenomena oy geniating
s Elecm-
em.
m changin.
agnttie°n duefeEM
magneie ields Callu

Inelyeed emt Induced Current
The e mP. So developeo is, Caldled induud
em.f I t heL Comduetor is m the orm 4 Closed
is
circut then a CALntt flow n the clrcut. TAs
Coled indueao Cuan

The phenomena o EM1 ds
he basis o wotking
etc.
opoer 3notors, ouynamos, transfon mers

Flux 4)
Magme tic
TRR maanetie ux ($) though ony sufaca
huld in a magneAe zield° s masuked b , h
tot number 8 magheic Unes o forca crosing h
Suhjaca nohmaly

t h e eil has nN twns
Han totad
Unked omoun
he caP tic
Hux
N ( . ) NBAtaso
ohon 90 Hhen
* tahun & = 0 hun CA Max valua)
SI Unit o magnatie fux s weber wb).

Scanned with CamStarner

, VarmaXeroxdpi2
L Weber (Wb)-
Over
n weben is the amount.o. magniticfux
an ana o 1 metre huld moial t a uri torm
magneic Hld
L Weber E
tesla x 1 m
Magnete Hux (o) is a scala quonit
*when a bedy is
PAALent in a unioam T,
non-umiform
to
mognaic yeld, outwand flux is takan
b påsiive "while , imwaol flux ib taken as
nghve .

Experiments o Faraday and Henry
Experiment-1 (Current induced by a mognat)
Fiashouos a Coi R
ColductAng
Cnnected o a Senaitive aaivamomeler
he
G.
Faraday ome Henry observethat

o h e n norh pole o a, bo magnet is pushecd
tomanals the coiL the aalvanometer sho0s a sudden
deglecion hich indicates that C e n t is induud
in h , Coil
Ci Thw i no' olulechon whn he a magnet
s helel staionary anywent
Scanned with CamScanner

, hen the magnet is movee qway.frr the Conl,
the aolvarnomerer shos, outletcion in,tKe opposite,
oreeion, 9hich, mdeatës rewersad in the oireeim
induts Cunt
Gvwken South pole o ba magret is moved onoes
q w a y . o the coil, the zalvanometer deteetioms
ak ohbosi te to those absewe with th. honh
poe simila movement.
V) TAe aalvanomete leklection ornd hence induesol
Cad) isfotrdto b Lger whem magnt id
Puh fahdis or
puluod airay fron thie Coil
(vi) when the bae magnat is held
Conl C is moved
stationony, ono
manet thi Seme
towands
ehects aa quwauyom
or
ohselw. the
I+ shons relohve
Col nd the megre JA motion bewean the
rspongible or nduciam
electic curreit in he coiL.
Expoument 2 Current inducsd by Cunrent)
Fi2 Shous a coil
Coreting
Connecre mateial inaulated A 12 cmoher and
a7alvanomwter.G.
cis ano ther Such CoiConnecte to
A steacdy
cwhtnt though Cicproduces a batterg,
a

magnaic jield adeng its asis. umigorm

Scanned with CamScGnner

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