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- Hambatan listrik
La = 2 Lb
ra = ¹/₃ rb
ρa = ρb = ρ
Ra = 80 Ω
Rb = __ ?
Hambatan listrik
R = ρ L / A
Rb / Ra = [ρ Lb / Ab] / [ρ La / Aa]
Rb / Ra = (Lb / La) × (Aa / Ab)
Rb / Ra = (Lb / La) × (ra / rb)²
Rb = Ra × (Lb / La) × (ra / rb)²
Rb = (80 Ω) × (Lb / 2 Lb) × (¹/₃ rb / rb)²
Rb = (80 Ω) × (¹/₂) × (¹/₉)
Rb = (80 Ω) × (¹/₁₈)
Rb = 4,44 Ω ← jwb