DE KIEMTRAHQC TiZ l[ t1 CO gAN ( thdi gian z 45 Phrrit ) Cflu I : (1,5d) b/E6 phat hign su tgn t+r ctia tir trudng trong mQt kh6ng gian ndo tl6, ngudi tu pn$i s& dr''rng dgng cu gi ? vi ph6t hiQn nhu thO nio ? c/ Dinh nghia tludng srlc tt. i Cdl}: (1,5t1) ^:-L -- .,,Ar niAn dA a/ Dinh nghla su6t triQn.dgng,cnm rrng vi cho bii5t nguy€n nhdn sinh ra su6t diQn dong cim ring trong "ffirrl?offddy gdm 1000 v.ng, c6 diQn tro 100Q, bdn kinh m6i vdngl0cm, hai dAu n6i voi mEt Ampe k6 tpo thanh rhQt mgch kin. Ngudi tat?o ramqt tt truong bi6n thion c6 f ry|S g6c v6''i mpt il#; "orelav ra B : i05i;;re ihJisi* 0,05s.''iim cuung rlQ ddng diQn qua Ampe k Cdu 3 : (1.511) Einh nghia sU ttUc *a ant .ing. ViCt cOngithtc cria einh luflt khric x4 6nh s6ng (d4ng co nffii6t irla,iirvei aAt"nr vn nz) vi chti thich cdc dvi lugng trong c6ngthrlc'' . Ap dsng: cong thttc''di"t, i,iat n-t ry "6;id;;;toi ra iot tt"i''ii3 rf,i tiu s6ng truvdn thdng : taiolruong g6c vOi mpt ph6n c6ch gifra hai moi trudng trong suot lb/ c6 hudng Oi quu i# cia mQt qua-cAu trong su6t a. - r-:r. ^..i* Zt truy€nqua mq,t ph6n c6ch gifla hai m6i trudirg trong su5t c6 cirng chi6t suft lugng E8 * Ceu 5 : (ltt) Dinh nghia hiQn tugng tu c&m'' Bii to6n: Ong d6y diQn hinh trp d{t oon, liiig''khi, chidu dai 20 cm, g6m to t Ooo vong'' diQn tfch m6i vdng" S: 1000 cm''. u) Tinh d0 tp cim L cria 6ng diy ? - n r . Ti-h c,r6r r.ri b) Ddng eliQn qua 6ng d6y d6 tdng d€u tir 0 d6n 5A trong 0,1 s'' Tinh su6t dign done t''u c&m xu6t hiQn trong Ong ddY ?
l[ Cflu I DE KIEMTRAHQC TiZ t1 CO gAN ( thdi gian z 45 Phrrit ) : (1,5d) gian ndo tl6, ngudi tu pn$i s& dr'rng dgng cu gi b/E6 phat hign su tgn t+r ctia tir trudng mQt kh6ng vi ph6t hiQn nhu thO nio ? c/ Dinh nghia tludng srlc i Cdl}: (1,5t1) ? tt a/ Dinh nghla su6t triQn.dgng,cnm rrng vi dong cim ring ^:-L -diQn dA su6t niAn ,,Ar cho bii5t nguy€n nhdn sinh hai dAu n6i voi mEt gdm 1000 v.ng, c6 diQn tro 100Q, bdn kinh m6i vdngl0cm, tt truong bi6n thion c6 ry|S g6c v6'i mpt Ampe k6 tpo rhQt mgch kin Ngudi tat?o ramqt ihJisi* 0,05s.'iim cuung rlQ ddng diQn qua Ampe k s6ng (d4ng B cria einh luflt khric x4 6nh "orelav : (1.511) Einh nghia sU ttUc *a ant ing ViCt cOngithtc Cdu cdc dvi lugng c6ngthrlc' co nffii6t irla,iirvei aAt"nr nz) vi chti thich iot tt"i'ii3 rf,i tiu s6ng truvdn thdng : Ap dsng: cong thttc'di"t, i,iat n-t ry taiolruong g6c vOi mpt ph6n c6ch gifra hai moi trudng suot cia mQt qua-cAu lb/ c6 hudng Oi quu r-:r ^ i* gifla hai m6i trudirg su5t c6 cirng chi6t suft ph6n c6ch Zt truy€nqua mq,t "ffirrl?offddy f : i05i;;re il#; "6;id;;;toi su6t a i# - Em hdy gi&i thich t4i ? Vii5t c6ng thrlc vd chri thich tirng d*i lugng C6u : (1,5d) Nir Ia" y5u t5 cria lyc,Lorentz? irls ttr trubng dou Ap dung: cho mQt dtA;",#; fa4 t5: 19' E8 (hinh vc) X6o dinh dQ l6n vi c6 B=0,2T chiu t6c dung ,nu lgc to+en-io ld 2mN d6u c0a iliQn tich d;iil;[,:";;il * Ceu : (ltt) Dinh nghia hiQn tugng tu c&m' chidu dai 20 cm, g6m to t Ooo vong' diQn tfch m6i to6n: Ong d6y diQn hinh trp d{t oon, liiig'khi, vdng S: 1000 cm' " u) Tinh d0 cim L cria 6ng diy c,r6r r.ri dign done t'u c&m xu6t Tinh su6t 0,1r s' Ti-h trong- n b) Ddng eliQn qua 6ng d6y d6 tdng d€u tir d6n 5A hiQn Ong ddY ? C6u : (1,5d) ul n6u tOng dgng cria kfnh hi6n vi cm' Hai kinh c6ch c6 tiou b/Vfi kinh cria *Oitfrt f,f,5n vi c6 tieu cU f1 = mm; thi kinh :U c6oh mit 25 cm' sO quan s6t c6 di€rn cgc vi6n vo cpc vd di6m cyc c4n o1o2 = 20cm nhi6u ? gi6c-cua kfnh hi6n vi ngim chirng o vO cycld bao Bii ? h:4 *it"*ot bqi v6i tryc chinh cria mQt thdu kinh h.i tu c6 tlQ ts di-.p' w ,ffi;t'd;f)r.o*.s69 kinh Tinhli€u cg cria th6u vi tri cria inh vd dinh li"l.th?t U Vat s6ng AB "a.n it Au f.inh 100cm X6c lAn vflt l6n bdng ,j vii,irE es pr,ai iittaiaauJAtrru elusc rnh &o a) s5 ph6ng d4i 6nh '