CURRENT ELECTRICITY EXAM READY NOTES, Lecture notes of Physics

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. —— { I A Current ter eu. : é Of . ee ee ' a ee crank Ao e Per, i ue er ae ~~ electrical = Yuentroles’ el raporeionat. S-SPPlice sage WV) con fat f * Cy a = aeEr 3 1] __eoreluctir 8 : pence) 2h (org we or , reed « ” Vv (potent. diffe oa of & valtge Vv ‘Ss | [nm e cenit Teag curvent (0) #t \ a sre _tomperatl _ ‘oe : ee, _—--— el 2. we cor tucler LEMOM COP Se, rere A iS constar vsIR Not applicable ¢ ___clepenolent: variary “4 WHet ig Unilate I Not afk vesistods Timgsten, ha@s highest OMe Sever | as i+ wu meeting port ‘eens Eleceric cond ¢ | ni, ya 1 a3 ays athe, Mow on and sacono 5 begs est OF at hy Ohm’s lai (oh taNen . s 2g gait dno FP i vy av ay ay i‘ = ghgwrees : ee Exploration: WY __mtthe nade rf = othevyn is in tT tae os pesca ty Crema Scent”. De . ee Simon Ohm tn BO ize Sepsis ena re 3% C = +4 reat the. thee _fursldner tat : H ae ee | rs we ret (I) ‘ ce A = alaeaeaiicnas fi Cae BP reel Yoorti¢ios * Ta io yy pee i “4 guctr cok quant thes: c - : {! ey otage wv) ° current @ + Resistance (R). a V«& lick acess a earunemice 1 7 of a Mette ‘S Appl i iP current (LD Flows through rt - : oil _ anol 1 } phere AR & comstant, whith 8 Roo a3 rhe cents : _ psmance oF the conchice gg mated - ~ ~ 1 I, Resstane clepends upon the matures olimension . i| I+ rel physics seqre of the Bemptonees ; - \j fone Oey F of otters tawe:*W% PP cob for nen-rribleatece. os piihabios KE Moe oe wblaet fo Fnop-Gincan ‘| “not applicable fer. ayirg _terrperature condibons || “3 Hl Not OppLicable to unitateral erectofeal _ Alerments only oe. one. deal sare aa ip of not all FESISLOSS m2 5 _. OHms — law> ] i ‘ Se ae A A. ‘ “ a | ony rrétaltic Corichictors_ obey. Obes Law. 2 Olimie __ oid pod ion berole Devices. tandat. a _ | Oevices _wnTeh Obey Chr’s law ara gue ELE t t il We 1 aon I Straight .F versus Vi stope_ ther it & cateed i ‘ | —~ | Olmre Ocewces: Extarnpie: _ | =e | tectrle fonitictets. 2 CHER. 2 rte BEE. oe — fi | Nen akan olev ices: Devices which don't obey i ae if : f Chrys — law _ancl___ 6883 thé * slope _ fF F vesus Eh ) 7 v ay” "S mot _ constemt #6 cated pon- ohmic oe oleic «example: cae hei ltt where y “ae a Aemieomdlueter’ sede” s ntateie ald” oe Wo cE AR. i . hee Piaatrd ot Absteance.. i ! fr jecervont Mas istavvea| Lorn a, ip ote irs unit 8 Ohms ‘represented yy * Dome ph A t : it } bela pcaraene do tty 4 i | ye’ iow opera? Y Bienen ee 6 edit Ftc | / 7 hi ade eres, Or eign seit 4 ue pee ; l Hl alow! bas + i hee let r beet 6 & 4 a & ue te cocker OF Pree mleclnrrs — eaot th, i Vice, | ators avid gage aver labiigy of path hr I ta aH : i ORS Mey 4 bgt ON Wes ee + ag . ine a i Cvnr’s ta vsIRr ov | Pred , SY, fot res tae. EE Ri pa I . =i i Gd oo eh lta | — i ‘| ol ge RE a. t q a ior | yn. Te wesstance Of a wire wi be . Ka vd \ ohn Jp. one vole potertrak ¢ Life venice ACTOSS i Oo ED | as end _couses ene ompore cursent _¢o flow Ve ~>s oe ra || for ie. ee ee ee ver yt po a oe I | my on) eee” Meets, | Sast —} _ ae Facets UPON willed RESISUNCE DEPENDS: | » Resistance &_ olirectly puopoatiorOh te length of nilcloy: ey en” a | + ees el Rot eS we ~ \ pniductivrty: aes The _aeciprecal of resieuty rs, ee RA : ant 7S mho yw 7'> of ~ ay VBI E oO Uisio7? m_i o yn ouuantis of he a \ > RA: Ww 1 L 4 : wn a | a 2 a the Yasistivited of YRELALS ; . = wm: i unit ( p? = vesisovitg ~ ei amed ~ Fetpore. , the me i ew || eeaes have __ VOT t a: onectric current: On _+hé i «|| Insulators have veg high 281s LF i 'S extreme im ; windalnte . | » || SemicondUcloas pave «bree these metered hovrelly wos fseivity Frese _'S alSo an mt Conduttancte: ~ materiats Rnown as 4 || Fe vecipreeat of _Vesistamce Of a Ay condlaccor ws cattearh COnaduclonrce . ol 4 & 6 vepresented bY" &”. ones | Gz 7a a r y, we HS me (Er ® ynpo L& : ty # 9n usual PIKE , WO eh seirpdn Gf cng A cont F conayctang O74 megoracent — Se es oe ¥ fe ei effect of “ e in em vague - The effect _ ~F en iter cert temperature _ upon _vebiSta eng a a _of material: sera, sa eg nesstand ec heAL OBIS (2 7 De _f yesistarc N the _Mmeease mn _ternperature. The eh OrAE in W eeitiiee if gaifly regular for__ nwrrnel : _vange of _ternperature - : - uy g - _&) | The Yesistance of electrotgtes » Insulators ¢ ? i _(2-9- 7 uv i (e-g. geimanium , &iticon e-toc) decrersa) wlth ia ithe merase 5, te mperating ’ | a | Temperaunre CoeKreent of Resistance Coe) Fre fractionge change tn est bitence peor ~ kes, (S Ceuta mA bernpey Atery re CO -OfF &- pre oe Of Bes istonce & Comsicier a COP Hector pay: mes Starce _&, 24 t-- ssa Propertiond to the imigiat resistance: inc VeaSe it | Rr- Ro Re aa | pivecely Proportional to the rise ip tempertuier Rr Re (4 T Combaring thé above tivo equations Te] Vee Ro *% Rol Hl as ae Rr - Ros GARoT ‘[Rr- Re cot | tate ae ( Pe fatoas ai Wpere & IS constant of EOE ODAL: oe it | ! SOMNCO NL, * i: sei a SS cetuad fe temperate coef trent | of vesistence- | 7 { I SEQ eo“, Siete pe Pigs values olepench tpern the pature of & il prelemal Cod terperatiire. Resistance ef terrpevarure T°e 4 Rre- : lesa se = Rot {P Terpenn ure co-efF tent. of rehiStarxe 8. be degra ab Prcregge (Pr ves store | of Fo PGT. VESMaATIe perch PRE. , 2? | in terrpemnture h ee A vreestat 1$ a Variable resissernce sect | te control the currvéne divider 10 or ac avottage wv contre. voltage in thé electric LA crete + 5 y ; . , ! mM $CVIB_ with a goad vessto7r the curyent by ad {vst ‘2 increasing or i ov DOBIECAICE- | pecvea8ing 7 Ae Y why is it used? > A. ; fd thes vey | < 3 made by ipaagra ie wire pound || A -vheostat Uv weed an inf pvr ane msukahng cylinde& - Y U core COWIE i] ge had three teimineds ff, B and C -< jn ,@_ecytindrital form- U |A_and 6 | ewo ences of - termine’ C iS the acy stable tevin ap ss Are _vesstance coil _: with & Zid corto” [ a } ct | 1 fre sicler__ contact _& coymected with pre! ‘sistance coil and # can move ology ‘te an€@ end to rhe Dr. | the coil pro BE UIO Ff MOw oles Of \ 9 i al ba) — ‘ we 3 a ard “ce? wie be deol -—_—— ies ~ i=l | . ‘i Oh FLV AC = besstance wrtl Neb? 4 4 ‘. ae vi 4 Ss x _shigtec! ata ar tog” +e ail Hk & becmge ene tergth OF BAEC OSs __—~ - LhVOUG, uwMtth i Le a ae I : . ri. yethr |S *eSistaone wi ~ovease hn oor esiStarce i peportibnaf to the Bngt)> | oe re of wire __ te — can Safely 6e opencde at FighO>. he. i! 2 \||CorsSTUCUOn. + oo 4 1 “ f e a : 70m Bemico date, eo i Land coe 2 iL fe. onttcles of fron , mick abe ee | i in Pre fp. Of _QUSC arc} oe + eds having pale of platinum (Saat ae _attached _t the tun erdee ! ! - 4 =D | shox? 7 | r be rs * | Rapid charge mn _vesktarxe with tempesan, |; | a ee Kl ph “com co-ehiaené r f a sisters (pc). # fe pe lempexoting aimee Of pesistange a | Los'pve and regatile a a Fcomistor { am, Oo fap fo) OAT, WE GN At Fe nce TZ ON __of _THER/71S7ape f saree ij 4 nee A against Bue aarventyf ve a | a é if —— _ Swe current 8 guick and shore tevact = pee through 4ystem that fs not _Lolesignedt fo sevulte @- jhis__pheriomenaon . observed as + O92 iwc | ih starting Of CRAUcbing 7770 OER (Ac motor ) : 1 Wt CUYIert Sugg - When y, 2 i _ 1 ago TPE OLLag switched 27, theornfstes $s cor axed ii #, PG YeAsistance _& ee C408 EC Lirmirs LE _ ll __ copent . sick: vetue. As a __ woums “Pp, YebANCE olrop andl EE B22 CBCOSOR _ fencers PO RET PIE ‘L NIC hemes US WwhG@d 00 moke p——-AaMiVe lamperatune alown. When ~Herperatne 8 Nigh , "esistance OF Mig meal i MP POnVeOble Matena2 fuct Py, pores | et [whe anol ive Jemperatore co -efhitignt) themnitoy, ’ onvecsety rts resistance PNCveares with aa eccobing temperature - . alle t aA srk chenge mn térmpevature com cause | if ei Aign't scant chang sin electri'cak ‘Yesitenga|" . | __ fctate = Gemperature measorerm ent | es | rata Ne freezers. C Al — erie aleyes — = + a = / vrepe ———t < re pon as vs & Taper i quel inde Pid | Sign Of 7 Themmbste : _p PIc{ fositive tempetatre _co-cfficient) alee i {| i, one Ff the propestes of Pia chermister iS thet wher excmsive large evarert flows they generate heat themscAa |, high BMesicAWve is ——__anof___becorne a i # They ate used ak timing. ewe? in eee cae sh Pa aie —t ore otso wn@f @4 heaters '?.. —2eeemotve AREY to provide | oddibionak_ x