0,5 m uzunlikdagi sim shunday cho'zildiki, bunda uning uzunligi 0,6 m ga yetdi. Bu jarayonda simning qarshiligi necha foizga ortgan?

  1. 12
  2. 20
  3. 36
  4. 44

📝 Detailed explanation

Sim cho'zilganda hajmi o'zgarmaydi: A₀L₀ = AL → A = A₀L₀/L
Qarshilik: R = ρL/A
R₀ = ρL₀/A₀
R = ρL/A = ρL²/(A₀L₀)
R/R₀ = (L/L₀)² = (0,6/0,5)² = 1,2² = 1,44
Qarshilik 44% ga ortgan (1,44 - 1 = 0,44 = 44%).
11 / 36 (31%)
Question 11 of 36
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