Watt volts is not an electrical term. Watts are the product of amps times volts.
It depends on how many Amps (current) are applied to the voltage. Watt = Volts x Amps. e.g. 12 volts @ 5 amps = 60 watts
The relationship is, a watt is the product of amps x volts.
120 volts.
Watts = Volts / Ohms Watts = Volts x Amps
A watt is defined as: W=1V*1A=1J/sec=1Nm/sec
Zero volts equal one watt. Watts is the product of amps times volts. Without an amperage the voltage can not be calculated. The time constant has nothing to do with the equation.
You buy power by the watt-hour. It has zero to do with the voltage!
60 and 100 watt in series then the 60 watt will have the biggest voltagedrop.In parallel they are the same.Using a voltage of 120 volts, the 60 watt lamp would have 75 volts across it and the 100 watt lamp would have 45 volts across it in a series circuit, bringing the total to 120 volts.
A 50 watt bulb designed to run on 12 volts takes 4.17 amps. A 50 watt bulb designed to run on 230 volts takes 0.217 amps.
P=EI. MEANS POWER EQUALS VOLTAGE TIME AMPERAGE .9 X 3.7 = 3.33 WATTS. 3.33 WATTS FOR ONE HOUR AT 3.7 volts
Multiply the volts by the amps to find the watts.
The formula you are looking for is I = W/E. Amps = Watts/Volts.