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.
Direct Current vs Alternating Current. In order to power all our devices and appliances, we need power. This is generated by power plants and are delivered to us in a variety of ways. Direct current and alternating current are the two ways of transferring power from one point to another with the use of conductors.