Final answer:
The effect of increasing the frequency of an AC voltage on the peak current in a circuit depends on the type of circuit. In a purely resistive circuit, the peak current remains constant. However, in circuits with inductors or capacitors, the peak current decreases as the frequency increases.
Step-by-step explanation:
When the frequency of an AC voltage is increased, the effect on the peak current in the circuit depends on the type of circuit. In a purely resistive circuit, the peak current will remain constant. This is because the current is determined by the voltage and resistance, and increasing the frequency does not change either of these factors. However, in circuits with inductors or capacitors, the peak current will decrease as the frequency increases. This is because inductive reactance and capacitive reactance increase with frequency, which limits the flow of current.