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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.
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How many watts is 18.5 volts?
Watts is the product of amps x volts. To give an answer the amperage needs to be given.
4 ohms equals how many watts?
Ohms does not equal watts. You need to know what voltage is across the resistor to determine how many watts it is drawing or how many watts the resistor should be rated for.Power is the voltage across the resistor SQUARED divided by the resistance. If this 4 ohm resistor has 12 volts across it then the watts power is (12 x 12) / 4 = 36 watts.1 Watt equals 1 Volt times 1 Amp.
How many amps are in 40 watts?
That depends on circuit voltage. 1 watt is equal to 1 volt times 1 amp.
How many amp is 450 watts 24 volts?
That gives you 18.5 amps.
How many watts does a charger have?
It depends on what kind of charger your talking about. Im assuming some type of smart phone charger... typically about 5.1 volts at .8 to 1 amp.... current ( amps) times voltage equals power (watts) so.. around 4 to 5 watts
