Question

U1=3,5B J1=0,28A U2=220B P2=60BT Н/Н R1-? P1-? J2-? R2-?

Answer 1

R1=U1/I1=3.5/0.28 =12.5 Ом
P1=U1*I1=3.5*0.28=0.98 Вт
R2=U2^2/P2=220^2/60=806.6 Ом
I2=U2/R2=220/806.6=0.27 A