What happens in a circuit when resistance increases?

When resistance in a circuit increases, the current flowing through the circuit decreases. This relationship is described by Ohm’s Law, which states that current (I) is equal to voltage (V) divided by resistance (R), formulated as I = V/R. Therefore, if the voltage remains constant and the resistance increases, the current must decrease in order to satisfy this equation.

In practical terms, as the resistance rises in a circuit, the opposition to the flow of electric current increases. This results in less current being able to flow, which can affect the overall functioning of electrical devices connected to the circuit. It's a fundamental concept in electrical engineering that illustrates how changes in resistance impact current flow.