d = 5 мм = 5*10⁻³ м, σ = 1*10⁻¹¹ Кл/см² = 1*10⁻⁷ Кл/м²
C = q / U, σ = q / S, C = ε * ε₀ * S / d
q / U = ε * ε₀ * S / d => U = q * d / (ε * ε₀ * S) => U = σ * d / (ε * ε₀)
U = 1*10⁻⁷ Кл/м² * 5*10⁻³ м / (1 * 8,85*10⁻¹² Ф/м) ≈ 56 В
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d = 5 мм = 5*10⁻³ м, σ = 1*10⁻¹¹ Кл/см² = 1*10⁻⁷ Кл/м²
C = q / U, σ = q / S, C = ε * ε₀ * S / d
q / U = ε * ε₀ * S / d => U = q * d / (ε * ε₀ * S) => U = σ * d / (ε * ε₀)
U = 1*10⁻⁷ Кл/м² * 5*10⁻³ м / (1 * 8,85*10⁻¹² Ф/м) ≈ 56 В