###### Asked in Uncategorized

Uncategorized

# What is the term used for the ratio of true power (watts) to the apparent power (volts amperes)?

**We need you to answer this question!**

###### If you know the answer to this question, please register to join our limited beta program and start the conversation right now!

## Related Questions

###### Asked in Home Electricity

### How many kva is 900 amp at 480 volts?

Work it out yourself, apparent power = supply
voltage x load current. This, of course, will give you
the apparent power in volt amperes, not kilovolt amperes -so
you will need to divide your answer by 1000 if you really do need
your answer in kilovolt amperes! And the symbol for kilovolt
amperes is 'kV.A', not 'kva'.

###### Asked in Home Electricity, Electrical Engineering

### How many watts equal 3kva at 110 volts?

It depends entirely on the power factor of the load. If
the power factor is unity (1), then the true power, in watts, will
equal the apparent power in volt amperes. If the power factor is
zero, then the true power, in watts, will be zero. This is because
true power (watts) is equal to the apparent power (volt amperes)
multiplied by the power factor.

###### Asked in Electronics Engineering, Physics

### What is the power dissipated by a resistor that has 5 amps flowing through it with 120 volts applied?

The power in a resistor (in watts) is simply the product of the
current (in amperes) times the voltage (in volts).
The power in a resistor (in watts) is simply the product of the
current (in amperes) times the voltage (in volts).
The power in a resistor (in watts) is simply the product of the
current (in amperes) times the voltage (in volts).
The power in a resistor (in watts) is simply the product of the
current (in amperes) times the voltage (in volts).

###### Asked in Home Electricity, Appliance Voltage and Travel Issues, Electrical Engineering

### What is the higher power 12 amps or 15.6 volts?

Neither amperes nor volts is the same as watts (power), so the
question "what is the higher power" does not make sense.
Amperes is electrical current flow, in coulombs per
second.
Volts is electrical potential, in joules per coulomb.
Watts is electrical power, in joules per second, which is
also amperes times volts.

###### Asked in Electronics Engineering

### How many watts can you get from 260 volts?

It depends on how many amperes there are. If you have 1 amperes,
then you get 260 watts. If you have 260 amperes, then you have
67,600 watts. If you have 0.001 amperes, then you have 0.26 watts.
Its just watts = volts times amperes.
Of course, the limiting factor is the available power behind the
260 volts, but you did not say anything about that.

###### Asked in Electrical Engineering

### What does a transformer do?

A transformer converts voltage to different values (the amount
of power remains the same). If you have a transformer with a turns
ratio of 1 to 10, and apply 120 volts to the "10" ratio side, you
will get 12 volts on the "1" side. If the current on the "10" side
is 1 Ampere, the current on the "1" side will be 10 Amperes.
Power is equivalent to the voltage times the current, so the
power going in the "10" side is (120 volts x 1 ampere = ) 120
watts. The power going out the "1" side is (12 volts x 10 amperes =
) 120 watts as well.

###### Asked in Home Electricity

### Why doesn't the amps x volts on a compact fluorescent bulb equal watts?

In a.c. circuits, the product of voltage and current is called
'apparent power', and is expressed in volt amperes. If you want to
know the 'true power' of a load, you must multiply its apparent
power by the power factor of the load. This is the cosine of the
angle by which the load current is (in this case) lagging the
supply voltage. Fluorescent lamps have a relatively-low power
factor, so the numerical value of the lamp's true power (in watts)
will always be somewhat lower than its apparent power (in volt
amperes).

###### Asked in Electronics Engineering, Physics, Electrical Engineering

### A circuit has a voltage of 240 volts and an inductive reactance of 30 ohms what is the current flow?

A circuit with a voltage of 240 volts and an inductive reactance
of 30 ohms would have a current of 8 amperes.
Reactance works just like resistance. The difference is that the
phase angle between voltage and current is not zero, so the ratio
of true power versus apparent power is not one.
Phase angle and power factor depend on frequency. This was
not specified in the question, so it is not answered.

###### Asked in Physics, Century - 1800s

### How do you get power factor?

Single phase PF = Input Watts/Volts x Amps. Three phase PF
=Input Watts/Volts x Amps x1.732.
Additional Answer
You can determine the power factor of a circuit using three
instruments: a voltmeter, and ammeter, and a
wattmeter.
Multiplying the voltmeter reading by the ammeter reading will
supply the value of the apparent power in volt amperes. The
wattmeter reading will supply the value of the true power in
watts.
Divide the number of watts by the number of volt amperes, and
that will indicate the power factor of the circuit.