What is true about the current in a series electrical circuit?

In a series electrical circuit, one of the fundamental principles is that the same current flows through each component connected in the circuit. This means that regardless of the values of the individual resistors, the current remains constant throughout the entire series circuit.

When considering the application of Kirchhoff's Voltage Law (KVL), it states that the sum of the electrical potential differences (voltage) around any closed circuit is equal to zero. In a series circuit, the total voltage supplied by the power source must be equal to the sum of the voltage drops across each resistor. Since this law is fundamental to circuit analysis, it applies directly to series circuits, confirming that the total voltage equals the sum of the individual voltages across the components.

Thus, recognizing that KVL is upheld in series circuits elucidates the relationships between current, voltage, and resistance effectively, making the assertion true.