Question

U=10B
R1=R3=16 OM
R2=R6=24 OM
R4=R7=8 OM
R5=12 OM
найти токи на каждом резисторе + все напряжения на каждом резисторе

Answer 1

Ответ:

Объяснение:

r12 = R1+R2 = 16+24 = 40 Ом

r67 = R6*R7 / (R6+R7) = 24*8 / (24+8) = 6  Ом

r45 = R4+R5 = 8+12 = 20 Ом

r345 = R3*r45 / (R3+r45) = 16*20 / (16+20) ==8.9  Ом

R = r12+r67+r345 = 40+6+8.9 =  54.9 Ом

I = I1=I2 = U/R = 10/54.9 ==0.18 A

U1 = R1*I1 = 16*0.18 =  2.88 B

U2 = R2*I2 = 24*0.18 = 4.32 B

U6=U7 = I*r67 = 0.18*6 = 1.08 B

I6 = U6/R6 = 1.08/24 = =0.05 A

I7 = I - I6 = 0.18 - 0.05 = 0.13 A

U3 = I*r345 = 0.18*8.9 = = 1.6 B

I3 = U3/R3 = 1.6 / 16 = 0.1 A

I4=I5 = I - I3 = 0.18 - 0.1 = 0.08 A

U4 = I4*R4 = 0.08*8 = 0.64 B

U5 = U3 - U4 = 1.6 - 0.64 = 0.96 B