BNG H THNG KIN THC Lí 9 ON MCH Cd : I (A) Ht: U(V) in tr :R(ụm) CT liờn h P(W) ; A(J) ;Q(J) CT chung cho cỏc on mch I=U/R U=I*R *R t =U AB /I *R 1 =U 1 /I 1 *R 2= U 2 /I 2 * l R S = R A B I=U/R U=I*R R=U/I U 1 /U 2 =I 1 /I 2 ẹoaùn maùch CẹDẹ HẹT ẹieọn trụỷ Tớnh chaỏt R1 nt R2 I = I1=I2 U=U1+U 2 Rt=R1+R2 1 1 2 2 U R U R = R1 // R2 I = I1+I2 U=U1=U 2 1 2 1 1 1 td R R R = + 1 2 2 1 I R I R = Q =I 2 Rt . BNG H THNG KIN THC Lí 9 ON MCH Cd : I (A) Ht: U(V) in tr :R(ụm) CT liờn h P(W) ; A(J) ;Q(J) CT chung cho cỏc on mch I=U/R