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z2 = 200
U2 / U1 = z2 / z1 = 200 :50 = 4
U2 = 4*U1
Odp. Ten transformator podwyższa napięcie czterokrotnie.
z² = 200
U₁ = 25V
U₂ = ?????
z₁/z₂ = U₁/U₂
50/200 = 25V/x
50x = 200 * 25 | :50
x = 5000 : 50
x = 100 V
Odp. wynika z tego, że transformator ten podwyższa napięcie z 25V do 100V