What happens to the total resistance in a series circuit?

In a series circuit, the total resistance is the sum of the individual resistances of all components connected in the circuit. As you add more components, such as resistors, the overall resistance increases because each additional resistor offers its own resistance to the flow of current.

When components are arranged in series, the current must pass through each component one after another, without any alternative pathways. Since resistance is measured in ohms and each component adds its resistance value to the total, the more components you have, the higher the total resistance becomes. This relationship is foundational in understanding how series circuits behave, making option C the correct choice.

In contrast, resistance does not remain constant or decrease with the addition of components, and it certainly cannot become zero in a properly functioning series circuit. These aspects highlight the nature of series connections and the overall impact they have on total resistance.