When an alternating voltage is applied to a purely resistive circuit?

When an alternating voltage is applied to a purely resistive circuit, the current flowing through the circuit is in phase with the voltage. This means that both the voltage and current reach their maximum and minimum values simultaneously. The relationship between voltage and current can be described by Ohm's Law, where the current is directly proportional to the voltage and inversely proportional to the resistance. As a result, the power consumed in the circuit is constant and can be calculated using the formula ( P = V \times I ).