Strona7

206 LICOM nEPEMCHHOfO TOKA

11—IG. fI>a3onwc tokh CHMMerpimHoro Tpext}ia3Horo npiieMim-Ka paoHhi 15 A. Kskhm CTaneT tok /ca nocjie neperopaiiHfl npcio-xpaH)rrc/iu d npODO^e A?

206 LICOM nEPEMCHHOfO TOKA

11—47. Kan »3MG»jiTcn tpaaonuc tokh u chmmctpiimhom npiicM-iiiikc, cocAHiicimoM 3RC3A0H c iieiYrpajibio, npn oGpune (Jjaaht A?

CncTCMa miTacTCJi cHMMCTpmmoft chctchoA cimycoiiaaahi[bix uaiipjDKciiHH. riaACimcM nanpfl>Kcmm b iiefrrpajibiioM npooo^e npc-ncGpcrae.M (/ — tok npu ciiMMcrpumiofi nnrpy3Kc).

CĆ-	■*£-	~7	i.	U o	li II
	Ib Z	l/^z	2.	/a = 0;	//> ~ /c — —- ■
B0-	__1-	L			1/2
			3.	/a — 0;	7/j — /c ^=3. *r •
	!a	H			2
AP-	->- L		4.	U -= 0 ;	/„=,/<; = // 3.
0 0-	—<-		5.	U - /;	/« = /c ^a /.

11—48. 3aAaito ;uihouhoc itaiipniKenne U Tpex<[)a3iiofi coth, dh-Taiomefi citMMGTpiiniibtfi Tpex<|)a3Hbnt npiieMiiHK. KaniiM ctahct na-npnjKGHHC na <J>a3e B {Uu), cc.ni conpoTHDJieiiHc ^a3U C 3aMKiiyTb H a KO p OT KO?

!. U„ = U. 2. Ub —T7% V J

3. u_D = Vau. 4. //* = -. 5. ilu — 2(/.

11—49. MtO nOKa)KCT ROJlbTMCTp, BKJUOnCHHhlil D ueilb CHMMCT-pmmoro Tpcx<|)a3iioro npiicMiiiiKa, ccjiii /inncitnoe iianpmKeniic mi raiomcii cctii panno U, a cpeAiuift Jimtcfiuuft npoooA oGopnaii?

MHOrO<DA3Hbl£ TOKU

1. AiC — 0-5. Ipc — 6 A.

207

1. Hyflh.

4 Ylu.

2 11—50. fI>a3Huc toku ciiMMCTpitHiioro Tpcx(5)a3iioro npiieMiniKa pamibi 18 A. Kokhm CTanoT tok I_vc rtoc.'ie licpcropaimn npc,aoxpa-HllTCJIJl D IipODOAC ZJ?

11—51. Tpexcj>a3iiafi uerib paCoTajin n ciiMMCTpirmoM pc>K»MC* Harpy3Ka coe/uiuena 3uc3aoh fica ny^cnoro rrpono/ia. riocac oópbina (^aaw A jianpn>Kciuin Un u Uc:

1.    yjieAji‘łaTCJi » Y'3 pa3.

2.    F>y,ayT pamibi no-noBmic jiimofinoro nanp«>Kcnmi.

3.    By^yT pamibi jimiefniOMy nnnpn>Kcmiio.

4.    OCTOliyTCH l(eH3MCimi>lMI(.

—    *ą

5.    yMciibiuaTcn n y3 pn3.

■j> ■ c‘

3. U.

11—52. KaiC II3MCHJ1TCJ1 JUlHefiHhie TOKH CHMMOTpHHHOn 3RC3flht Cc3 lICj‘[TpaAH, CCJIII 4>a3y A 3aKOpOTl!Tb? / — JlHHCHIIblfl TOK npn ciimmctphuiioh narpy3K0.

F    = 0; /* = /Y2; /_c = /)'2.

2.    In = iy2-, 1c = If2.

3.    !_a = 21\ /o=7; /_c = /.

4.    /a-V3/; /W; /c = A

5.    f_A = 3/; h,=p/; /_c-y3/.