... Nhn bit c an mch gm in tr mc ni tip: I / Cng dũng in v hiu in th an mch ni tip: 1) Nh li kin thc lp 7: + Trong an mch gm búng ốn mc ni tip I = I = I2 (1 ) U = U1 + U2 (2 ) + Tng HS tr li Cõu C1: ... dũng in,vi in tr dõy dn v thi gian dũng in chy qua Q = I2.R.t (Jun) Q: l nhit lng ta (J) I:l cng dũng in (A) R: l in tr dõy dn t: l thi gian (s) Q = 0.24 I2.R.t (Calo) III/ VN DNG: + Cõu C4: + ... = 1, 09 (1 im) b) Ta cú : U1 = U2 = U3 = I3 R3 = 0,6 x = 3,6V Vy : I1 = U1 / R1 = 3,6 / = 1,8A (0 ,5 im); I2 = U2 / R2 = 3,6 / = 0,9A (0 ,5 im) Bi 2: (3 im) a) P = U2 / R R1,2 =U2 / P1,2 = (2 20)2...