In series circuits, the total voltage is distributed among the capacitors, meaning each capacitor experiences a different voltage. The voltage across an individual capacitor can be calculated using the formula Q = C V, where Q is the charge, C is the capacitance, and V is the voltage across that specific capacitor. For three capacitors in series with a total of 12 volts, the voltage across the 2 uF capacitor will not equal 12 volts. Instead, it will be a fraction of the total voltage based on the capacitance values of all capacitors in the series. Understanding this distribution is crucial for accurately calculating voltage across each capacitor.