What happens to the capacitive reactance XC and the inductive reactance XL if the frequency of the ac voltage is doubled? XC and XL both decrease by a factor of 2. XC increases by a factor of 2, and XL decreases by a factor of 2. XC and XL both increase by a factor of 2. XC and XL do not change. XC decreases by a factor of 2, and XL increases by a factor of 2.