![]() Power is defined as work over time, and work is the transfer of energy. To wrap our heads around exactly what a kWh is, we need to unpack some basic electrical terminology. Now that we’ve got watts out of the way, we can start looking at kW to kWh calculators and kWh usage calculators. Next, you want to figure out how long you plan on using this appliance. Most appliances have their wattage rated on a power level at the back or bottom of the product, but some only provide you with voltage and amperage.īut now that we know what to do if we have volts and amps, the watts can be obtained with ease. If they were next to each other then we multiply.Īn appliance's power consumption determines the watts an appliance uses for a specific amount of time. Since the watts are above the current in the triangle, it’s a matter of division. ![]() ![]() To calculate the volts, simply covert the voltage section on the triangle and use of the two remaining units. Power, or watts, is on top, with current and voltage being in the bottom left and right of the triangle respectively. The variables in this equation tend to be shown in the form of a triangle separated into 3 parts. Watt’s Law states that the power of a circuit is equivalent to the product of voltage and current. Watt’s Law not only helps us understand how current and voltage share a relationship with wattage but also lets us calculate the watt usage of an appliance. They describe the rate at which work is done on an object.Ī kW to amps calculator uses the same electrical law for conversions as a watts calculator: Watt’s Law. Watts are derived units of power represented with a capital ‘W’ in calculations. Before we can look at how to use something like a watts cost calculator, we must understand how to see how many watts an appliance uses.
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