Odpowiedzi

2010-01-21T20:48:48+01:00
P = U * I
I = P / U

P = 3,5 kW
U1 = 230V
U2 = 12V

I1 = P / U1 = 3500 W / 230V = 15,217... A
I2 = P / U2 = 3500 W / 12 V = 291,666... A
2010-01-21T20:50:34+01:00
Dane:
P = 3,5 kW = 3500 W
U₁ = 230V
U₂ = 12V
Rozw.:
P = U×I
I₁ = P/U₁ = 3500 W/230V = 15,2 A
I₂ = P/U₂ = 3500 W / 12V = 291,6 A