Odpowiedź:
R = 10 Ω
I = 25 A
W = 25 kJ = 25 000 J
----------------------------------
t = ?
P = U * I = I*R * I = I²*R
P = 25² * 10 = 6250 W
W = P*t
t = W/P = 25000J/6250W = 4 s
t = 4 s
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Odpowiedź:
R = 10 Ω
I = 25 A
W = 25 kJ = 25 000 J
----------------------------------
t = ?
P = U * I = I*R * I = I²*R
P = 25² * 10 = 6250 W
W = P*t
t = W/P = 25000J/6250W = 4 s
t = 4 s