5. Pick a device in your home laptop, appliance, blow dryer, whatever. Calculate how much it costs to run your device for a certain amount of time. Fill in the values in the table below. Note that if you are choosing a laptop or tablet, the wattage on your adapter is how much it takes to charge your device. If you do not know how much your electricity rate is, you can Google the average rate for your area in cents/kW hr. (6 points) Electronic Device Wattage in kW Time used in hours, or a fraction of an hour Cost of electricity per kW hr in your area Total cost to use the device