206 Utnu nEKMtHHoro toka
11—46. Oa3onhie toku cMMMerpumioro Tpexcj>a3Horo npiicMim-xa pnoiihi 15 A. KanuM CTaiieT tok Ica iiocjie neperopaiiHH iipcio-XpaKHTCJI>I D npOBO^C A?
1. /ca =0. 2. Ica = 5 A.
3. /<m-7.5A. 4. /c = pj=A. »5. Ica *= 15 A.
11—47. Kan iomciimtcsi (paaonuc toku n ciiMMeTpiiMHOM npneM-iiiiKC, cocAiiiicmiOM ane3A0ft c neiiTpajibio, npn oGpbine (|)a3W A?
CucrcMa miTaoTCH cliMMOTpumioft chctcmoh cimycoiiAa.nhnbix iianpn>KC]im1. riaACimcM nanpnwcnmi b iteftTpajibHOM npOBO/ie npc* ncGpcracM (/ — tok npu ciiMMcrpiimtofi narpy3Kc).
*' U-0\ /* = /c= y= .
2. Ai — 0; '
3. U - 0; /„ / '.
4. /a ~= 0; l„~/c = fV 3.
5. /A - /; /„ - /c - /.
11—48. 3aaano annofmoe iiaiipfiHcermc U Tpcx<()a3i(oft cctii, mi-Taiomcfi ciiMMCTpirinbifi Tpex<|>n3nbift npiteMiniK. Kbkhm ctaiict na* npn>KCKHC na <j>a3e B (Uu), ccaii conpOTHDJieimc (^a3U C 3aMKityTb
liaKOpOTKO?
11—49. Mto noKa>KCT ROJibTMcrp, dkjiiomchhmu b tieiib chmmct* picmoro Tpcx(|)a3iioro npncMiniKa, ocaii jnuicimoe iianpnweiiKc nn-TaioiucH cctii panno U, a cpcAnnu annciinuu npoooA oGopnan?
MHOrOc*A3Hhl6 TOKM
1* fDC = 0.
5. 7/rc = 6A.
207
4 Ylu. ' 5. —.
2 -2 11—50. OasHbie toku ciiMMeTpUHiioro Tpcx(j)a3iioro npiieMiniKa paniiu ISA. KamiM cTancT tok luc noc.ic ncpcropaiuwi npoAOxpa-
HHTCJIfl B IipOBOAC D?
11—51. Tpcx<j>a3iian i;cni» paóoTajin » ciiMMCTpirniOM pcwitMc. IIarpy3Ka cocAiiucua 3uc3aoh Gc3 uy-ncnoro npono/ia. riocac o6puna <l>a:ibj A jianpn>Kcnifn Un h (Jc\
1. yneJMPiOTCJi n V3 pa3.
2. By^yT pilonu noAOBmie jiimcfliioro nanpn>KCiimi.
3. ByayT paniiu jmitcfmOMy nanpn>KciiiHO.
A. OcranyTCH nełi3MCimi>iMif.
— *4
5. yMCHbiiiaTCJi n y3 pna.
11—52. KaK 1I3MCHJ1TOI JIIIHCftllhte TOKU ClIMMCTpHiIHOM 3RG3AW 0C3 llCHTpajlH, CCA11 (J)a3y A 3aKOpOTl!Tb? 7 — JIHIiefillUft TOK npi! cnMMCTpiiMHofi narpy3K0.
2. /a-/; lc=IfF.
3. /a = 2/; id~I\ /c = /.
5. /a = 37; 7/, = V37; lc~f3>(.