Question

ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

Объяснение:

1

R2 = U/I2 = 40/0.5 = 80 Ом

I1 = U/R1 = 40 / 100 = 0.4 A

I = I1+I2 = 0.4+0.5 = 0.9 A

R = U/I = 40 / 0.9 = = 44.4 Ома

2

R2=U2/I= 60/ 0.004 = 15000 Ом = 15 кОм

R1= R2/3 = 15000/3 = 5000 Ом = 5 кОм

R3 = R1*5 = 5000*5 = 25000 Ом = 25 кОм

R = R1+R2+R3 = 15000+5000+25000 = 45000 Ом = 45 кОм

U1 = I*R1 = 0.004*5000 = 20 B

U3 =  I*R3 = 0.004*25000 = 100 B

U = U1+U2+U3 = 20+60+100 = 180 B