In a series circuit, adding resistors increases total resistance.

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Prepare for the NCCER Introduction to Electrical Circuits exam with our comprehensive quiz, featuring multiple choice questions and detailed explanations to boost your confidence and knowledge. Master concepts and ensure exam success!

Multiple Choice

In a series circuit, adding resistors increases total resistance.

Explanation:
In a series circuit, resistances simply add together. The total resistance equals R1 + R2 + … + Rn, so when you add another resistor in series, youcrease the sum and the overall resistance goes up. This also affects current: with a fixed voltage, I = V / R_total, so increasing R_total reduces the current. In practical terms, the added resistor has a positive resistance, so the total always increases; only a zero-ohm path would leave it unchanged, which isn’t typical for a resistor.

In a series circuit, resistances simply add together. The total resistance equals R1 + R2 + … + Rn, so when you add another resistor in series, youcrease the sum and the overall resistance goes up. This also affects current: with a fixed voltage, I = V / R_total, so increasing R_total reduces the current. In practical terms, the added resistor has a positive resistance, so the total always increases; only a zero-ohm path would leave it unchanged, which isn’t typical for a resistor.

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