What effect does increasing the resistance have on the current in a circuit for a constant voltage?

Increasing the resistance in a circuit while maintaining a constant voltage leads to a decrease in the current flowing through that circuit. This relationship is described by Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), or I = V/R. When the voltage remains constant and resistance increases, the value of current must decrease to keep the equation balanced. Therefore, a higher resistance results in less current being drawn from the power source, reflecting the inverse relationship between resistance and current in an electrical circuit. This principle is fundamental in electrical engineering and helps in designing circuits with appropriate values of components to ensure they function correctly.