In a series circuit, the current (I) remains constant throughout. The current through each resistor in the series is also equal to the total current flowing through the circuit. This is a fundamental characteristic of series circuits.
What is the relationship between the current through the circuit and the individual resistors in a series arrangement?
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In a series circuit, where resistors are connected end-to-end along the same path for the flow of current, the relationship between the current through the circuit and the individual resistors is that the current remains the same through all the resistors.
This is a consequence of the conservation of electric charge. In a series circuit, there is only one pathway for the flow of current, so the same current flows through each resistor. The total voltage across the series circuit is equal to the sum of the individual voltage drops across each resistor, according to Ohm’s Law (V = IR, where V is voltage, I is current, and R is resistance).