Which statement correctly identifies where the total resistance in a series circuit lies?

• A. Total resistance in a parallel circuit
• B. Individual resistance of each component
• C. Total current in the circuit
• D. Total resistance in a series circuit

Answer: (D)

In a series circuit, the total resistance is the sum of all the individual resistances along the path the current travels. This combined resistance represents everything the current must push through as it goes around the loop, so it’s a property of the entire series arrangement, not of any single component. That’s why the statement identifying the total resistance as lying in a series circuit is the best choice.

Remember that in a series setup the same current flows through every component, and the voltage divides among them according to each resistance, but the total resistance is simply R total = R1 + R2 + … for all components in the path. This contrasts with a parallel circuit, where the effective resistance comes from a different combination of the components, and with the idea that total current is about how much current flows given that total resistance and the supply voltage, not where the total resistance lies.