Zap Through 2026 with the NCCER Electrical Level 2 Test – Power Up Your Skills!

In a series circuit, one of the defining characteristics is that the current flowing through all components remains the same. This is due to the nature of series connections; the same amount of current must pass through each component because there is only one path for the current to take.

Voltage, however, behaves differently in a series circuit. The total voltage supplied by the source is divided among the components connected in series. This division of voltage occurs according to the resistance values of each component, meaning that different components can drop different amounts of voltage, but the total of these voltages will equal the source voltage.

For instance, if there are three resistors in series connected to a 12V source, the voltage across each resistor will vary depending on its resistance, but the sum of the voltages across each resistor will equal 12V.

Therefore, it is correct to state that in a series circuit, voltage splits among the components while the current remains the same throughout the circuit.