... (L2,R2) mc ni tip v t mt in ỏp xoay chiu cú giỏ tr hiu dng U Gi U1, U2 l in ỏp hiu dng tng ng gia hai u cun dõy (R1,L1) v (L2,R2) iu kin U=U1+U2 l L1 L2 L1 L2 = = A L1L2=R1R2 B C L1+L2=R1+R2 ... : 129 01 14 27 40 02 15 28 41 03 16 29 42 04 17 30 43 05 18 31 44 06 19 32 45 07 20 33 46 08 21 34 47 09 22 35 48 10 23 36 49 11 24 37 50 12 25 38 13 26 39 ... Cõu 21 : Bit lng m=4,0015u; mp=1,0073u; mn=1,0087u; 1u=931,5MeV Nng lng ti thiu to tng hp c 22 ,4l khớ Heli ( ktc) t cỏc nuclụn l A 2, 5.1 026 MeV B 1,71.1 025 MeV C 1,11.1 027 MeV D ỏp ỏn khỏc Cõu 22 :...