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.
The standard mains voltage used in the United States is approximately 110 to 120 volts, according to Georgia State University's physics department. Depending on the power load, it can vary between these two measurements. Continue Reading.