Question

определите общее сопротивление. r1=r2=4ом, r3=r4=2ом, r5=6ом, r6=r7=5ом

Answer 1

r6 + r7 + [{(r2*r3 + r1*r3 + r2*r3)/(r1*r2*r3)} + r4 + r5] / [r5*({(r2*r3 + r1*r3 + r2*r3)/(r1*r2*r3)} + r4)] = 5 + 5 + [(8 + 8 + 8)/32 + 2 + 6] / [6*{(8+8+8)/32 + 2}] = 
10 7/12