Bộ đề thi hsg quốc gia môn vật lý các năm

KY THI TOT NGHI:tP TRUNG HQC PHO THONG NAM 2020 Bai thi: KHOA HQC Tl/ NHIEN Mon thi phin: V ~T Li Thai gian lam bai: 50 phut, khong kd thai gian phat iJJ Ao ~ ···························································· Can 1: D~t hi~u di~n th~ Uvao hai dftu mc)t do~n m~ch di~n thi cuong de) dong di~n khong d6i ch~y qua do~n m~ch la J Cong suftt tieu th\! di~n nang cua do~n m~ch la A 'PJ>=U1 • B 'PJ>=UI C 'PJ> =U D 'PJ>=U 2 • Can 2: Mc)t m~ch kin phing co di~n tich S d~t tir tnrong d€u Bi~t vectCY phap tuy€n ~ cua m~t phing cht'ra m~ch hqp vcri vectCY cam ung tir B m