When resistance increases in a circuit with constant voltage, what happens to the current?

When resistance in a circuit increases while the voltage remains constant, according to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is expressed by the formula: V = I × R. In this scenario, if voltage is kept constant and resistance increases, the equation indicates that current must decrease to maintain that constant voltage.

As resistance goes up, the circuit essentially restricts the flow of electric charge, leading to a reduction in current flow. This understanding is crucial in electrical theory and helps in the practical application of circuit design and troubleshooting. The foundational concept that defines this behavior is Ohm's Law, which is essential for anyone studying electricity and circuits, especially in a field related to line construction and electrical work.