1 volt amps
Amps are how many electrons flow past a certain point per second. It is equal to one coulomb of charge per second, or 6.24 x 10^18 electrons per second. Volts is a measure of how much force that each electron is under, which we call potential. Power (watts) is volts times amps. The voltage delivering 1 watt depends on how many amps are present. We use watts to measure power (P), and amps (I) times volts (E) equals watts. We sometimes see the equation P = I x E written to express this relationship. Let's look at a couple of instances. If we have 1 amp times 1 volt, we'll get 1 watt. There are no watts or amps in a volt. Watts are equal to volts multiplied by amperes (watts = amps x volts) … . If you consider the equation Watt(W)=Voltage(V)*current(I), you can see the relationship between the watt and volt. They are linked by: power in watts = voltage in volts x current in amps. If your line voltage is 120 VAC, the 300 watt inverter will generate 300/120 = 2.5 amps. For the input to the inverter, which is probably 12 volts, the current is 300/12 = 25 amps, but probably higher due to losses in the inverter. 1 watt might equal 1 VA for a resistive load, but for many types of  load, especially induction motors, the power factor is lower,  usually about 0.75 so that 1 VA equals 0.75 watts. So 1 watt is any ratio of volts x watts that equals 1. 1volt x 1amp = 1 watt. or. 9v @ .11 amps = 1 watt. For ratio of volts x watts above read product of volts x amps. True for resistive loads.
http://www.powerstream.com/Amps-Watts.htm http://www.answers.com/Q/How_many_volts_are_there_in_1_watt http://www.answers.com/Q/How_many_volt-amps_is_a_watt https://answers.yahoo.com/question/index?qid=20100511065601AA0pqgn http://www.answers.com/Q/How_many_volt-amps_is_a_watt http://www.answers.com/Q/How_many_volt-amps_is_a_watt
one watt is equal to how many volt-amps