How to convert electrical voltage in volts (V) to electric power in watts (W).
You can calculate watts from volts and amps, but you can't convert volts to watts since watts and volts units do not measure the same quantity.
So The power P in watts is equal to the voltage V in volts, times the current I in amps:
P(W) = V(V) × I(A)
So watts are equal to volts times amps:
watt = volt × amp
or
W = V × A
What is power consumption in watts when the current is 3A and the voltage supply is 10V?
Answer: the power P is equal to current of 3 amps times the voltage of 10 volts.
P = 10V × 3A = 30W
What is power consumption in watts when the current is 3A and the voltage supply is 20V?
Answer: the power P is equal to current of 3 amps times the voltage of 20 volts.
P = 20V × 3A = 60W
What is power consumption in watts when the current is 3A and the voltage supply is 50V?
Answer: the power P is equal to current of 3 amps times the voltage of 50 volts.
P = 50V × 3A = 150W
What is power consumption in watts when the current is 3A and the voltage supply is 100V?
Answer: the power P is equal to current of 3 amps times the voltage of 100 volts.
P = 100V × 3A = 300W
The real power P in watts is equal to the power factor PF times the phase current I in amps, times the RMS voltage V in volts:
P(W) = PF × I(A) × V(V)
So watts are equal to power factor times amps times volts:
watt = PF × amp × volt
or
W = PF × A × V
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and RMS voltage supply is 120V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times voltage of 120 volts.
P = 0.8 × 3A × 120V = 288W
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and RMS voltage supply is 190V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times voltage of 190 volts.
P = 0.8 × 3A × 190V = 456W
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and RMS voltage supply is 220V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times voltage of 220 volts.
P = 0.8 × 3A × 220V = 528W
The real power P in watts is equal to square root of 3 times the power factor PF times the phase current I in amps, times the line to line RMS voltage VL-L in volts:
P(W) = √3 × PF × I(A) × VL-L(V)
So watts are equal to square root of 3 times power factor PF times amps times volts:
watt = √3 × PF × amp × volt
or
W = √3 × PF × A × V
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and the RMS voltage supply is 120V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times the voltage of 120 volts.
P(W) = √3 × 0.8 × 3A × 120V = 498W
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and the RMS voltage supply is 190V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times the voltage of 190 volts.
P(W) = √3 × 0.8 × 3A × 190V = 789W
What is power consumption in watts when the power factor is 0.8 and the phase current is 3A and the RMS voltage supply is 220V?
Answer: the power P is equal to power factor of 0.8 times current of 3 amps times the voltage of 220 volts.
P(W) = √3 × 0.8 × 3A × 220V = 914W
How to convert watts to volts ►
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