bonsoir
a ) on sait que U = R × I
on a R = 22 Ω et U = 230V
I = U/R
I = 230 V / 22 Ω
I = 10.45 A
b)
P = R × I ²
P = 22 Ω × 10.45 ² A
P = 2402 .4 W
c)
on a E = p × t
P = 2402.4 W et t = 4.75 h
E = 2402.4 W × 4.75 h
E = 11411 W/h
on convertis en kW/h
ça nous donne 11.41 kW/h
bonne continuation ☺️
