The wattage measures an instantaneous power consumption of a load. You get charged by Watt Hours. A typical cost per 1000 watt hours might be around 12 cents.
A small microwave typically uses around 350 watts when in use.
If the transformer uses 5 watts per hour you need to know what you are paying per 1000 watts from your power company. If you pay lets say $3.00 for 1000 watts then when your transformer burns 1000 watts it cost you $3.00 your cost will be $3.00 for 200 hours run time.
The formula you are looking for is I = W/E. Amps = Watts/Volts.
The cost of using a 70 watt device depends on your locations and the rate of electricity charged by your utility provider. To calculate the cost, you can use the formula: (watts / 1000) x hours of use x cost per kilowatt-hour.
the rule is.... run 100 watts 24/7 for 100.00/year. Your cfl will cost apx.75/year. However, while your cfl only uses 75 watts it is equivalent to apx 350 watts and produces a broad variety of colors in the spectrum making it great for growing!
A small microwave typically uses around 350 watts when in use.
$350?
The power would be 350 watts. Power is the rate at which energy is transferred or converted, so in this case, if 350 joules of energy is used per second, the power output would be 350 watts.
The formula you are looking for is, 746 watts = 1 HP.
350$
$250-$350
350$
about 300:350
If the transformer uses 5 watts per hour you need to know what you are paying per 1000 watts from your power company. If you pay lets say $3.00 for 1000 watts then when your transformer burns 1000 watts it cost you $3.00 your cost will be $3.00 for 200 hours run time.
In Massachusetts, they cost about $600.
it cost $347 to mine and for extra info 1400 watts of energy
Well they cost about 350 to 600 dollars depending where you buy them