*&*Concluell sl fatreb5rL

s) brpt"lcrtt. slcgcrca gl nodul de eotectare e aparate-lar" la elftultcl GlactrtcG reallzatc.

aba*rrtift" &dril d* mrta!{i e} srort}"or d* m5}raru gi rafror*'fu.,[:ilor ctr c.:*ta de preclatc s *paratelcr si]FuaG eta]oa{rii*

c) Obscrvall aparatclc dln laborator gl consGElnatl:pcttfcufarlt5ilk fuiletlorlels," I

IS lucrarc If Etlritlez{ ae8ur&rrrr rezlstslr}cl elcetrlcecur letode roltalp+rae*rlc&, puntea d€ cureBt contlrB"ru (wheat-ctorc), ehppnttnrl, negolryetnrl.

Corslderrtll rcneralq,i:i,, ;" .i $b,t6*p SsltsEE€triltdet" (nrri&rtx' tl Eet.6da tn,)rrstrlal&) :

est$ ry sstsdg tndlrvcts. dc o6$urarc a reztcten{*l electrtes f$EEcilt costtnlu, cr ac bauaezl pc legea lul Ohr. Dup6 rrodul d*Le6cro {.i*s1t![etfti:h0:t tn etrcult" des6*bl&i

r ixdet*Jq1-sso.atg {ffdi.f} feloalt pentfti nE6l.rrerrs rraEs,.teaf*lor larl. felt de rcelatrrrla lnteri.oerB . a'F€ra*etrul,rl Fr.-lx

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suu e*t$, ,iI fietp6*-.sqqltl d.e Pl$gnt:ponttry (ukntgtoae) e*te s

Betsd&-de rl{Eurare * reria{en1*i &lettrL*s f,oSeslte .6{1i'€r;f,e

$cheps d* prlnefplu * p:nlii. Slreutetane *st* r*preaestet& tn'b.-,

R*sistea*elo R.*rfrrr8-4 aftt rta*s*"tcare sn cw"lstants vtrtali.l[" Inthl*zfrd'tntret'ttp&t*nr1 k St eodtf,l"ctnl p*R, R" gl R6 ntn'6 ec Gehlllhrcazt rnuP

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shtr.s, .ct, f,a}*ltJa tl'l " 9n +*r* 11, *Hte tclr:i*s1:& d* pr:i.l;le. li.$llk** Sar r#p*r'trrl &r.&U emt* lt:dtcat p* a*a160 }a perellia cis

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#,Mg*} &}'s{trn$Le {xr:al*g5c sqrr yrttm*rgs} e*ter ,S*

obl**d* fn*+rp*rat "tntr.-un rsult-lmetru" Ser .f,olosexcp de ,.*#",:&.***** Brfur;Lp{t d6 r's*}5.xar* * *k*xeir*},c,'rt ;}}ri,r: i::fisr.lrnnea c*-d@r*J, ds trmcfufia Xle x.es3,stscxif % (tJ6-5) ruu px.{n cqneq*su.rsxrazlstori.t}rr.t fio tn lrncls {ia r€eeti.s a unui *s:p}.lfl*el*r $p*re*tieusL (ffg.g). In prlne rar.lant{ ec f,o}osegte o sursa de cu*r6Et eonst&c*, ca.ne deblt*au& pr 3x. Cgderea de tenslu:re re B*

ss*6 aspl.lfloat* de *ap,i.l,f,l**>tsrul 6*ers!ionai A- a c&rulItens{rxr}e de legi"r* *ft* mI;u*rsi:& dp un nqltmetru. & d*ueysrlant! foloeegte scheea cle

Frrnciptqr dIm fn6.5- fntrereelllver goaru a aapllftcatorulujopere${on*} ftfm* qrectlr lapoto:ltie3*[ !e6sdlr' rr*au).t*. :

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(rer1 stenla dlntre d'n:6 41rcu!i+" necrrplate. electnic)' re?s&*

ten!& '** ar8 *v*lrj"ll rj.e mflr-ime 3r"*t u xe fol'*sew* epsPete BF*'.

{!a1,$ y1u$}lte .rofgql$*Sg}e, Un weg*}'rxae*;r,t (f5.g"?r1 ca*e*& SJ"zs'

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c" ,iI$urg *v$nc scaLa rre4ats sn Hr2. L6 ten6Surie cuxloEfut&e

curentul. prLn clrer"l3tr maeurei: de xi*r'ea p*rse*r':3 -lr&t sste 'r'

c maeur6 s rezf$telrte$ 6* l.*oletis.FEr:tru{].lf1,*tste!l*sl*$t;.e'&s&d4f(ilrt*lse$il'lL$Ji'f'na*

se,; rlentru o msqln& oi*:lrlc6F valgqree mtn'Ln$ {a rFr ' :t:rt"o

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fr, pentrrr,b nssxru. rep"i_*lten[e e).ectrl*6 c!t. st*{*e v*:1"*&$1Y}sr*"

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al$tentet Hr. *1 r:na der $c'lrlinxl r*xletans*j i{"n *13 xrnhe}.* xre*

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flfurd valaers* rszlateBtst tascrtsE pe reelstor'bI $n vur !06$rra reelatenNel* cu prntea de c"c* dcter'l

E1nitld valoarca lor ctr relatla (:) Cl coaparl*d r*atltatul. cu "veloarc* slttttut* pr*n netodu voltaqperrctrldA. :, : l

' c) Sc yc atudla posibl.lttatea foloelrtl oultlaetrelordln taboretnr yentnr edaurarsr reuletente{

al $e va e*Eerr6 r€slst€nte de lrotrelne le o ueglnAolcctrle$ di.s labarator, verlflclrdtr-so d&c& ss srs Yalsatta ',

Eel Esrre cr Rlz tln" '

lgtreEE l sl cqaclqzll*) 6trl procedeli dacf, rxr cunoaqte!1" *rr&fnul dc odrir*e

al nuel"staetc:l de deterrl*at 61 nl.al va]orlle RO Ul \ ?

b) Care urtodE yl as Fare oal accestbtl, ?

&. tns'rtrie&a ptfigRII $I EIG&SI$I Ifi ff$ig$r c0N?lNuu' I*rersrse trrstcref, ett.t pa*lbtlttf;lXle dlrecte de

rderrarr., ett gt crlc furdire*ta" ebor.dtni! deasercee*r 91 problq-ae *rorl.I^or _dc e&8'rr3 tn fuaclie da achesa f*losit&.

Conalderatll relT er+IoBxpretla put*rtl ag&r&t* tn elrcultele da curent

cortlnLru crtc dc for.Ear

p [Y] * utrl n k] tt)unds t! pf I reprreal-utd vsl.orile co$Eta:sta f,n tlmp aLe t*nsl-u*

nll" respectl.v curcntulul.

a. lll!*r,rarce prter$l. prlu mtoda dLrect{.laglDd boblaa flrl e dlspozltLvulul de otrEur* e1$c-

trodl"neufo ta.E6rls {n el.routt, aetfe}. ca ${ fte pareur*5 de.,curerltul aboorblt de re*eptor Io rboblu& d.e ourent) E{ cea mo*bt}[ tr p*ra]*l en;r reeeptortrl", en*iuneE U tb*bfn& de tqrr*l-Nrnslr 56 oblir:c us *attsetr:tr el"eicxrudlnsflrrc (ffg,l), *. cfrr.ltdsvr.atts c6 eeter ttefnd *ont c6 prlm b*blna ecbil6t):eceu*eurant