Class notes
Class notes physics 1155 (PHYS1155)
- Course
- Physics 1155 (PHYS1155)
- Institution
- Northeastern University
Notes detailing Electromagnetic Induction
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Magnetic Fluxwedefinemagneticnoxtnrougnasurfaceiustaswedefinedeiectri.fm
thin fi fEsm
Iii
unitofmagnet
Fluxweber.ws
1Wb 1 m
Example 1: Magnetic Flux CalculationsPARRY
intend.in
tiieifot.heaveit
Ipe aPerspective
view colour
no
p
probie tneairectionimanesanangieofsowitntne
field magnetic
so i
ii iii iii
from
come
over
Magnetic Flux Through a Coil
avg.ua
a
argugnacoilisdefinedasthefiuxtnrougnanysurfacetnatnastne
lusingstore.stneorems.tnatthefiuxaoesnotdependontnespecific
s.ie fi
we
Foraconwitnnt.ms define
i NB.ñdA
Induced Current
Achanging flux
magnetic an current
causes induced
neinducedemr.is
the
corresponding.me
the
causing current
iiiiiijiiii.ie
fi
iiiiiiiiiiiii'iiiiii
iiiiiiiiiiiiiiii.ie
FEE
nescauseenema.naic.ienroaontnecoiitocnan.e
Faraday’s Law on Induction
magnEday'safaw gnlndygtionjop.neinducedemfinaaosedloopeau.is the of timerateofchangeof
n egative the
in
theminussigngivesthedirectionof
note
theinducedemf
towiinswiauEaEErinmagneticfieldleads chance
All
ifeng.im
inducedEMFthe give
the
theaster flux
magnetic the
changes the
g reater
in
, Direction of the Induced Emf
be
inedirectionoftheinducedemfcan found
increasing
warfarin
iiiiii
ii
iiiiiiq.fi
i e
a ieiiiiiiio
Example 2: EMF and the current Induced in a Loop
the
Find emf
induced
the
and in circuit
current the
induced
II
induced
g a 0.24mV
Comm's
current
induced law
48µA
Example 3: Magnitude and Direction of an Induced EMF
B 4.000m
n o s
of EMF
magnitude induced
e
I E
150011.200
o04mtcoszoo.ie o43sv
of currentiscowlooking
direction the
The from to
southnorth
Example 4
a
eme
Att 1wsEs.am why
com
if
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Ii i
Current
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b since sothe flowscan
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