Jakie jest średnie natężenie prądu płynącego przez żarówkę o mocy 100W włączoną do sieci o napięciu 220W.
P = 100WU = 220VI = ?P = U*II = P/U = 100W/220V = 0,45A
P = 100 W
U = 220 V
I = ?
P = UI
I = P / U
I = 100 / 220 = 0,45 A
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P = 100W
U = 220V
I = ?
P = U*I
I = P/U = 100W/220V = 0,45A
P = 100 W
U = 220 V
I = ?
P = UI
I = P / U
I = 100 / 220 = 0,45 A