The total resistance of a circuit with resistances of 18 ohms and 9 ohms is:
A) 18 × 9 = 162 ohms. B) 18 - 9 = 9 ohms.
C) 18 + 9 = 27 ohms. D) (18 ? 9 ) / (18 + 9 ) = 6 ohms.
C
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