medium · MCAT chem-phys

Three 10, Ω resistors are connected in a circuit. Which configuration provides the lowest total resistance, and what is that value?

1. All three in parallel; 3.33, Ω.
2. Two in parallel, connected in series with the third; 15, Ω.
3. All three in series; 30, Ω.
4. Two in series, connected in parallel with the third; 6.67, Ω.

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