To calculate the change in temperature, subtract the initial temperature from the final temperature. Example: 84.2 degree Fahrenheit - 41 degrees Fahrenheit = 43.2 degrees Fahrenheit. The temperature from morning to afternoon changed by 43.2 degrees Fahrenheit.
It needs 12 volts so it will be the standard modern power supply provides 12 volts of power.
That is a wrong question, because the house has to take the voltage, the power station is delivering. Either 120 volts in the USA or 230 volts in Europe. Volts are never consumed. That is a wrong question, because the house has to take the voltage, the power station is delivering.<br /><br />Volts are never consumed.