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Sagot :

Bonjour,

v₁(t) = (4UB/π).sin(ωt)

V₁ = V₁max/√2 = 4UB/(π√2)

V₁ = 115 V  ⇒ UB = 115 x π√2/4 ≈ 128 V

Umax = 115 x √2 ≈ 163 V

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