Modelová Otázka ID 3485 - 
Která z následujících rovnic správně popisuje vztah mezi napětím, proudem a počtem závitů na primární (U1, I1, N1) a sekundární (U2, I2, N2) cívce transformátoru?
Správná odpověď je: A, B, C
Pro transformátor platí, že jeho transformační poměr k, tj. poměr počtu závitů na sekundární cívce k počtu závitů na primární cívce
,
je roven poměru napětí na sekundární cívce a napětí na primární cívce. Zároveň je transformační poměr roven převrácené hodnotě příslušných elektrických proudů na cívkách, proto platí
a zároveň platí:
,
,
.
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