22.(1)R1=U1/I1=2伏/0.2安=10欧
(2)I=U/R=6伏/10欧+50欧=0.1安
(3)I=I1=U1/R1=3伏/10欧=0.3安
U2=U-U1=6伏-3伏=3伏
R2=U2/I2=3伏/0.3安=10欧
R=R1+R2=10欧+10欧=20欧
25.(1)0.2
(2)4.5
(3)6
(4)10.5
26.(3)(a)液体密度与深度的乘积相同,液体的压强相同.
(b)液体密度与深度的乘积越大,液体的压强越大. 22.(1)R1=U1/I1=2伏/0.2安=10欧
(2)I=U/R=6伏/10欧+50欧=0.1安
(3)I=I1=U1/R1=3伏/10欧=0.3安
U2=U-U1=6伏-3伏=3伏
R2=U2/I2=3伏/0.3安=10欧
R=R1+R2=10欧+10欧=20欧
25.(1)0.2
(2)4.5
(3)6
(4)10.5
26.(3)(a)液体密度与深度的乘积相同,液体的压强相同.
(b)液体密度与深度的乘积越大,液体的压强越大.