U13 = U12 + U23 = 3,5V B)TA CÓ

Câu 8. a) Ta có: U13 = U12 + U23 = 3,5V b)Ta có: U23 = U13 - U12 = 16V – 7,2V = 8,8V c)Ta có: U12 = U13 - U23 = 15V – 9,5V = 5,5V