What are the differences between 240v and 120v electrical systems and how do they impact household appliances and electronics?

The main difference between 240v and 120v electrical systems is the amount of voltage they provide. 240v systems have higher voltage than 120v systems. This impacts household appliances and electronics because devices designed for 240v may not work properly or may be damaged if plugged into a 120v outlet, and vice versa. It's important to use the correct voltage for each device to ensure safe and efficient operation.