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U1 - napięcie strony pierwotnej = 230V
U2 - napięcie strony wtórnej = 1380V
I2 - prąd strony wtórnej = ?
U1/U2 = I2/I1
I2U2 = U1I1
I2 = U1I1/U2 = 230 razy 6/1380 = 1380/1380 = 1A
odp
I2 = 1A
U₁=230V
I₁=6A
U₂=1380V
Szukane:
I₂=?
U₁/U₂=I₂/I₁
230/1380=I₂/6
I₂=1(A)