Which of the following is an effect of high resistance in a circuit?

High resistance in a circuit leads to reduced current flow due to the fundamental relationship described by Ohm's Law, which states that current is equal to voltage divided by resistance (I = V/R). When resistance increases while the voltage remains constant, the current must decrease. This reduction in current flow is a direct consequence of the higher opposition to the flow of electric charge.

Additionally, with higher resistance, any given voltage across the circuit will result in a lower current compared to a scenario with lower resistance. This principle underlines the behavior of electrical circuits and is a crucial aspect to understand when analyzing or designing electrical systems. Consequently, while power consumption can also be affected due to the reduced current, the most concise and direct effect of high resistance is the reduction in current flow.