1) 1/R1 +1/R2 |1/R3=1/3 +1/7 +1/10=121/210 R=210/121=1,74 Ом
2) P=I*U=0,2*220=44 Вт 3) p=R*S/L Ом*м2/м=Ом*м 4) Тепловое
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1) 1/R1 +1/R2 |1/R3=1/3 +1/7 +1/10=121/210 R=210/121=1,74 Ом
2) P=I*U=0,2*220=44 Вт 3) p=R*S/L Ом*м2/м=Ом*м 4) Тепловое