Total resistance of resistors is sum of all resistors.
Total resistance in series is R1 + R2 + R3.
Total resistance in parallel is 1/R1 + 1/R2 + 1/R3.
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega.
An easier way to explain resistance is to consider an example of a person in a crowded market struggling to go from one shop to another. This situation is certainly similar to an electron trying to make its way through a wire.
Learn more about resistance here:- https://brainly.com/question/17563681
#SPJ4