A simple circuit with a power supply, switch (not necessary to draw in) and a single load/resistance

• A simple circuit with a power supply, switch (not necessary to draw in) and a single load/resistance

• Calculations are used to troubleshoot, double check, and understand what is happening in an electrical circuit

• With E=I*R, you can use a graphic triangle formula to figure out which formula to use if two of the three variables are known