In terms of current and voltage, what remains the same across all components in a series circuit?

In a series circuit, the current remains constant across all components. This is due to the nature of how current flows in a series arrangement; the same amount of electrical charge passing through one component must also pass through the next, since there is only one path for the current to take. As a result, the current does not change in magnitude at any point in the circuit.

Voltage, on the other hand, does not remain constant across all components. Each component in the series circuit can drop a different voltage depending on its resistance. The total voltage supplied by the source is shared among the components, leading to varying individual voltage drops.

Overall, while the current is uniform throughout all parts of the series circuit, the voltage across each component can differ.