A major difference between AC and DC electricity is that A) the current in AC electricity varies in magnitude and direction. B)
the current in DC electricity varies in magnitude and direction. C) the voltage in AC electricity varies in magnitude and direction. D) the voltage in DC electricity varies in magnitude and direction.
AC stands for Alternating current and DC stands for Direct current. The main difference between AC and DC is that current changes direction in AC and not in DC. Actually the direction of flow of electrons reverses periodically. In direct current, the electrons flow in same direction.
Try process of elimination. We know it's not boiling because that is basically water turning into gas. It's not condensation because it's not water which collects as droplets on a cold surface when humid air is in contact with it.
a substance made from two or more different elements that have been chemically joined. Examples of compounds include water (H2O), which is made from the elements hydrogen and oxygen, and table salt (NaCl), which is made from the elements sodium and chloride.
