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For the sake of simplicity, assume we have an electrical appliance, single phase.
Powered by U = 230V from the wall, its nominalpower N = 2600W and the resistance R = 26 ohm.
If I wanted to calculate its operational current "I" (not entirely sure about the English terminology - the amount of the current's intensity in the circuit), I could go about it in 3 ways:
1) I = U/R = 230/26 = X amps
2)N = UI => I = N/U = 2600/230 = Y amps
3)U = RI, N = UI => N = I2R => I =√[N/R] = √[2600/26] = Z amps
Seemingly all of these Should give us the correct answer, but why do they differ and which would be the correct one? It's not homework, just curious.
Powered by U = 230V from the wall, its nominalpower N = 2600W and the resistance R = 26 ohm.
If I wanted to calculate its operational current "I" (not entirely sure about the English terminology - the amount of the current's intensity in the circuit), I could go about it in 3 ways:
1) I = U/R = 230/26 = X amps
2)N = UI => I = N/U = 2600/230 = Y amps
3)U = RI, N = UI => N = I2R => I =√[N/R] = √[2600/26] = Z amps
Seemingly all of these Should give us the correct answer, but why do they differ and which would be the correct one? It's not homework, just curious.