hi... Tt sp n ri! ch cn hn 2 tun na thi! Tng ngy tng ngy em cng cm thy mi th ang rn rng dn ln ! :) Nhng ngi xa qu y cng l lc nh qu nhiu nht ! Chc ch tt ny v qu n Tt vui v! :) Mi ngi din n v mi ngi xung quanh ch s cng ch chia s , s chia ! :) Chc ch lun vui v , hnh phc thnh cng! Thn, diepnguyen! :x KIM TRA MN VT L 11 NC Thi gian 45 pht H v tn:..SBD: Cu 1: Mt si dy c in tr 48,84 nhit 200C, nhit 20000C n c in tr l bao nhiu?(bit h s nhit in tr ca dy l 4,5.10-3K-1) A 484 . B 48,4 . C 484 m. D 48,4 m. Cu 2: Hin tng no sau y l dng phng in trong khng kh iu kin thng? A Phng in thnh min. B H quang in. C Pht x tia catt. D Phun l trng t bn dn p sang bn dn n. Cu 3: Bn cht ca dng in trong cht in phn l: dng chuyn di c hng ca A Cc electron ngc chiu in trng v cc l trng cng chiu in trng. B cc electron t do. C cc electron, cc ion. D cc ion dng cng chiu in trng v cc ion m ngc chiu in trng. Cu 4: Pht biu no KHNG NG khi ni v chm tia catt: A Pht ra vung gc vi b mt catt. B C th m xuyn. C Khng b lch trong in trng v t trng . D C mang nng lng. Cu 5: m bc cho mt ci ng h bng niken ngi ta dng phng php in phn, trong : A Ca tt bng bc, Ant l ng h, t trong dung dch AgNO3. B Ant bng bc, ca tt l ng h, t trong dung dch CuSO4. C Ant bng bc, ca tt l ng h, t trong dung dch bt k. D Ant bng bc, ca tt l ng h, t trong dung dch AgNO3.. Cu 6: Tnh cht no sau y KHNG PHI l ca kim loi. A Tnh dn in tng khi nhit tng. B Dng in i qua gy ra tc dng nhit.

C Dng in tun theo nh lut m. D in tr sut tng khi nhit tng. Cu 7: S ph thuc ca cng dng in trong chn khng vo hiu in th nh th no? A Cng dng in tun theo nh lut m. B c trng Vn-Ampe l ng thng i qua gc ta . C cc nhit khc nhau, cng d dng in bo ha c gi tr nh nhau. D cc nhit khc nhau, cng d dng in bo ha c gi tr khc nhau. Cu 8: in tr mt dy st nhit t1 l R1, khi in tr ca dy l R2= 7,5R1 th nhit dy st s? (bit h s nhit in tr ca st l 6,5.10-3). A Tng 1000C. B Gim 1000C. C Gim 10000C. D 0 Tng 1000 C. Cu 9: Hin tng in phn c ng dng : A hn in. B iu ch ha cht. C lm nhit k nhit in. D lm ng phng in t. Cu 10: Chn cu tr li ng: A Ht ti in trong kim loi l cc electrn t do v l trng. B Ht ti in trong kim loi l cc electrn t do. C Ht ti in trong kim loi l cc ion. D Ht ti in trong kim loi l cc electrn t do v ion. Cu 11: phn bit mi trng dn in c phi l cht in phn hay khng, ta c th lm cch no? A Quan st xem khi dng in chy qua c hin tng in phn hay khng. B Quan st xem m cc c b tan hay khng. C Quan st xem c dng cc ht ion chuyn di c hng hay khng. D Quan st xem cc dng c pht sng khng. Cu 12: Hiu in th pht sinh tia la in trong khng kh gia hai in cc khc nhau cch nhau 0,6m l 3.105V.Vy hiu in th gia mt m my mang in cao 200m v mt ngn cy cao 10m l bao nhiu? A 107V. B 108V. C 106V. D 100V. Cu 13: Mt vt dn trng thi siu dn th: A Nhit ca n bng 00K. B Dng in chy qua n bng khng. C Nhit lng ta ra trn vt l ln nht. D in tr ca n bng khng. Cu 14: Cht in phn dn in yu hn kim loi v: A V cht lng dn in yu hn cht rn.

B Cn c thi gian tch cc ion ra khi mui ca n. C cc ion chuyn di c hng va chm vi nhau rt nhiu lm in tr tng ln. D mt ion trong cht in phn nh hn mt electron t do trong kim loi.. Cu 15: C hai b in phn: b A luyn kim, b B m niken, kt lun no sau l ng? A Khng b no c dng cc tan. B B A c dng cc tan. C B B c dng cc tan. D B B c m cc tan. Cu 16: Ngi ta kt lun tia catt l dng ht tch in m v: A n c mang nng lng. B khi ri vo vt no n lm cho vt tch in m. C N lm hunh quang thy tinh. D N b in trng lm lch hng. Cu 17: Cp kim loi no sau y c th to thnh mt cp nhit in? A St-ng. B Platin-Platin. C St-St. D ng ng. Cu 18: Khi vt dn trong trng thi siu dn th cng sut tiu th in c tnh bng: A P=Uit. B P=I2R. C P=UI. D P=At. Cu 19: Cp nhit in ng-constantan c h s nhit in tr l 40 V /K, nu sut in ng nhit in l 0,2V th hiu nhit hai u mi hn l : A 50000C. B 50000K. C 0,0050K. D 0,0050C. Cu 20: Mt bnh in phn ng dung dch CuSO4 vi Ant bng ng, in tr ca bnh in phn l 5 .Hai cc c ni vo ngun in c e = 12V v r=1 .Xc nh thi gian dng in chy qua bnh in phn bit lng ng bm vo m cc l 0,16g (v vi ng c A= 64, n=2; F= 96 500C/mol): A 12,08.10-3s. B t=12,08s. C t= 1,28s. D t= 120,8s. Cu 21: Cho phng in qua cht kh p sut thp, gia hai in cc cch nhau 20cm.Qung ng bay t do ca electron l 4cm.Cho rng nng lng m electron nhn c trn qung ng bay t do ion ha cht kh.Hy tnh xem nu c mt electron a vo trong cht kh th c th sinh ra ti

a bao nhiu ht ti in? A 62 ht. B 8 ht. C 16 ht. D 64 ht. Cu 22: Biu thc no sau y l sut in ng nhit in ca cp nhit in. T = (T1 T2 ) . A T = (T1 T2 ) B C = I (R + r) . D = T (T1 T2 ) . Cu 23: Cch tnh s nguyn t (n) trong mt mol kim loi no sau y l ng? ( bit s Fa-ra-day l F v in tch nguyn t l e). F e n= n= e . F. A n = F .e . B n = F +e. C D Cu 24: Dng in trong it chn khng c cng bo ha l Ib= 10 m A. Tnh s electron pht x t catt trong thi gian 1s ( bit ln in tch eletron l 1,6.10-19C) ? A 625.1018 (electron). B 6,25.1018 (electron). C 6,25.1016 ( electron). D 625.1016 ( electron). Cu 25: Trong hin tng in phn dung dch AgNO3, ngi ta thy c 223,6g Bc bm vo in cc m.in lng chy qua bnh in phn l bao nhiu? ( bit ng lng in ha ca Bc l k=1,118.10-6 kg/C). A q= 3.105C. B q= 3.104C. C q= 2.103C. D q= 6 2.10 C.

p n : m 001 1. A 2. B 3. D 4. C 5. D 6. A 7. D 8. D 9. B 10. B 11. A 12. B 13. D 14. D 15. C 16. B 17. A 18. C 19. A 20. B 21. A 22. D 23. C 24. C 25. C