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Lechve 25°
Electrodynamics ~ rnouing cheages
Se tor we have courier te agra problen, a dakeruinane he.
fovees exerted on parkele wld moves aa electric + maga
Felds produced by Star pareles t
be Lorente force laa gives .
a
E
rh oa F = q (Es) i
WE Ee
Y
We mort issue was to dabomna Ha felds fat me produced by :
chorgps + cunents. For stchonany charge dismibubcus (dechostades Lez alectnc
3 \ Gr) Feld is
— r ‘
a E = AWEo \ ar? at
+
a fF all space i
eo 3 a i
© i
ong Huis seks hes: VE = =P and | Vxe =O
j SP Dat |
ape
Jr remans to detemmne te fields tot are produced in 1an-stahanany
sthahaat,
, + ores
3 a
a a
@
The onswas to thease can be alluned by a moe gaoal std, aguakous
tat guven E ad B. Ue tle a pet db ico tat 9 on
we sowees tat produce EF aaB, but E and R wil
sowce dishiloubcus thenscues produce cwrenls
V
NN co ard change chorge
P rah E | ep | -) densities
5 BJ produce (%|
7
and te ethre — process cycles atand .
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Now conider the process o produciag cunents in conductors. [a one
comple a bakery exerts a force on hg charges manny Reraagh the
loaeng 0 Sone
In ancker a loop is pulled erage a magaehic field
Sat Lan
| Fg Te cad into 2 3
| 44 Hee ‘ Fag, = vB
AC
Wheheuer force does tus, we dehne He electromobve fone (EMES as
c= fal
loop
lee Fg he face perrunit charge. inte used, te
loop pulled terug fe mognohe feld:
€ = ge xB dd
We shall seh £us. Howeud, nde that if cle charg. moves. af
covsten velociy arounchtte clrauit dene must be an celdibeed force.
t
uss "Consequence, oF on dlechic Ridder a unit clade
Fea-E (invde te fold region)
\uus wade to held reg
ia
Ave -(@
a
2 AV= bFdt = \e-Vb.
4 E=AV
for He bop siheahan |
e = § (Gx) at
loop
= 5 G ulG x8) da
surhae
Abo = FA
eG) - EDFGHEs VEH-8HH
For steady sihwiing Pe -Comsh, Teas,
oy
Gud) - -W-HE
and
ge - S@¥) 81 at
So
€ = - (GD Bx dude + (0 -Y) By tele VF) Be dds]
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£
i
= a s
we couride He special case whee B= Bat ond Be vyy
Tn:
abe
f= - (yn dd
ax 8s
-- | $5 Yd
== 4 | Be ay.
~-4 (bas
So defining eo tax
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