Wrong question. I assume that this pertains to a car and not a house. All modern cars run on a 12-volt system. So what I think you meant to ask is "how many AMPS in 90 watts at 12 volts?". Watts divided by volts equals amps, so 90 watts divided by 12 volts equals 7.5 amps. If you are trying to wire in a car stereo amp, better go with a 10 amp fuse.
volts times amps = watts
There is no direct relationship between watts and volts. Watts = volts x current in amps.
You can't convert volts to amperes. Those are quite different units; that would be like converting, say, meters to seconds.
Watts and Volts are two distinct types of measurement.
Watts = Volts * Amps Therefore: 70 Watts / 13.8 Volts = 5.07 Amps
Amps, volts and watts are interrelated, but you need to do a little math. Amps * Volts = Watts
Zero. Watts is the product of Amps x Volts. As you can see an amperage value is needed. Voltage = Watts/Amps. Volts = 200/? 20 volts
4 volts and how many amps? Watts = amps x volts. It depends on the amount of current (in Amps) flowing at 4 Volts... See Ohms Law: Watts = Volts x Amps If you have 2 Amps flowing at 4 Volts you are dissipating/consuming 8 Watts. If you have 10 Amps flowing at 4 Volts you are dissipating/consuming 40 Watts.
Volts don't make power. Watts do. Watts = (volts) x (amps) 1 horsepower = 746 watts
watts = volts x amps, example-2 watts=2 volts x 1 amp, example- 2 watts=120 volts x .60 amp.
You need the formula: Amps * Volts = Watts But you get to do the math.
Watts is volts times amps, so 12 x 30 = 360 watts