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...
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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