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Physics for IGCSE & O level - Electricity (Section 12 - No. 23)

What is the total resistance of two resistors (6 ohms and 12 ohms) connected in series?
2 ohms
6 ohms
12 ohms
18 ohms

解释

In a series circuit, add the resistances: 6 + 12 = 18 ohms

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