What happens to the flow of current when voltage is decreased in a circuit with fixed resistance?

In a circuit with fixed resistance, the flow of current is determined 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 is decreased while the resistance remains constant, the current must also decrease. This is because a lower voltage means that there is less "push" driving the charges through the circuit.

Thus, if the voltage is reduced, the amount of current that can flow through the circuit will proportionately decrease. In practical terms, if you imagine a water system where the voltage represents water pressure, reducing the voltage lowers the pressure, resulting in less water flowing through a pipe that remains the same size (which represents the resistance). Therefore, a decrease in voltage leads directly to a decrease in current under the condition of fixed resistance.