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1/Rz234 = 1/R2 + 1/R3 + 1 /R4
1/Rz234 = 29/28
Rz234 = 28/29
Opór zastępczy całego ukłądu wynosi:
Rz= R1 + Rz234 + R5
Do samodzielnego dodania, ponieważ nie do końca wiem, ile wynosi R5 (błędny zapis, jak podejrzewam).
1/ Rr = 1/2 + 1/4 + 1/3,5
1/ Rr = 1/2 + 1/4 + 1/ (7/2)
1/ Rr = 1/2 + 1/4 + 2/7
1/ Rr = 14/28 + 7/28 + 8/28
1/ Rr = 29/28
Rr = 28/29
R = R1 + Rr + R5
R = 7/2 + 28/29 + 101
R = 203/58 + 56/58 + 5858/58
R = 6117/58
R = 105 27/58