How do you find potential difference in a series circuit?

In a series circuit, the potential difference (voltage) across the entire circuit is equal to the sum of the potential differences across each individual component. To find the potential difference across a specific component, you can use Ohm's Law (V = I × R), where V is the voltage, I is the current through the circuit, and R is the resistance of that component. The total voltage supplied by the source is equal to the sum of the voltages across all components, so V_total = V1 + V2 + V3 + ... + Vn.