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How can you calculate current when you have volts power?

Divide Watts by Volts ; this gives you Amps.


How many watts are in 30 volts?

To calculate the power in watts, you will also need to know the current in amperes. The formula to calculate power is P (watts) = V (volts) x I (amperes). If you only have the voltage (30 volts) and not the current, you cannot determine the power in watts.


What sort of energy is associated with watts and volts?

Electrical energy/power is associated with watts and volts.


What different between volts and watts?

volts is the unit of votage while watts is the unit of power


How many watts does 20 amps at 240 volts produce?

The unit of power is expressed in watts, and the product of current (Amps) and voltage (volts) is power there fore if you multiply the amps and the volts give watts. so 20 x 240 will give you a 4800 watts of power.


How many volts does it take to make 1 horsepower?

Volts don't make power. Watts do. Watts = (volts) x (amps) 1 horsepower = 746 watts


How many volts do you need to power 2 watts?

watts = volts x amps, example-2 watts=2 volts x 1 amp, example- 2 watts=120 volts x .60 amp.


Which is higher in energy Watts or volts?

Watts = Volts X Amps. Thus watts and volts are related but neither is higher in energy. Energy is measured as power times times, in other words watts times seconds (called Joules) or kilowatt-hours (called Units).


Why high voltage transmission is used in case of transmitting electrical power?

Higher voltages allow for lower currents; electric power is measured in watts, which are calculated by volts multiplied by amps. The higher the voltage, the lower the amperage. This is important as a higher amperage requires a thicker cable; compare the cable on a car battery (12 volts at say, 50 amps, equalling 600 watts) to that on a vacuum cleaner (120 volts at 10 amps, or 1200 watts). The vacuum uses more power, but that power is transmitted through thinner wires, because the voltage is higher. It is the same with long-distance power transmission. Thinner wires are less expensive (they are made of aluminum braided over a steel cable for strength) and also weigh less, allowing the poles/pylons to be of lower strength. Also the losses would be reduced in high voltage transmission.


How many watts are in 19.5 volts?

Impossible to know. You need to know both the voltage and current draw to calculate power (watts). Power in watts = Volts X Amps


How many volts are in 850 watts?

Watts and Volts are different units. It is like asking how many apples are there in 6 oranges. Watts = Volts x Amps x Power Factor Power Factor ranges from zero to one.


Unit of electric power determined by muliplying volts times amperes?

Power=Volts x Amps Unit for power is watts