Formula for Resistance (Ohm's Law):
R = V / I
Where:
If the voltage (V) is 12 volts and the current (I) is 2 amperes:
R = 12V / 2A = 6 ohms
Result: N/A ohms
Formula for Current (Ohm's Law):
I = V / R
Where:
If the voltage (V) is 24 volts and the resistance (R) is 8 ohms:
I = 24V / 8 ohms = 3 amperes
Result: N/A amperes
Formula for Power (P):
P = V * I
Where:
If the voltage (V) is 230 volts and the current (I) is 10 amperes:
P = 230V * 10A = 2300 watts
Result: N/A watts
Formula for Horsepower (HP):
HP = (V * I * η) / 746
Where:
If the voltage (V) is 220 volts, the current (I) is 15 amperes, and the efficiency (η) is 0.9:
HP = (220V * 15A * 0.9) / 746 = 3.98 HP
Result: N/A HP
Formula for Kilowatt (kW):
kW = (V * I * η) / 1000
Where:
If the voltage (V) is 230 volts, the current (I) is 10 amperes, and the efficiency (η) is 0.85:
kW = (230V * 10A * 0.85) / 1000 = 1.955 kW
Result: N/A kW
Formula for Kilovolt-Ampere (kVA):
kVA = (V * I) / 1000
Where:
If the voltage (V) is 480 volts and the current (I) is 30 amperes:
kVA = (480V * 30A) / 1000 = 14.4 kVA
Result: N/A kVA
Formula for Motor Poles:
P = 120 * f / N
Where:
If the frequency (f) is 60 Hz and the speed (N) is 1800 RPM:
P = 120 * 60 / 1800 = 4 poles
Result: N/A poles
