What is the equivalent resistance of a 10 ohm and a 15 ohm resistor connected in parallel?
Answer and explanation
Correct answer: C. 6 ohms
- Step 1: For two resistors in parallel, R = (R1 x R2) / (R1 + R2). Step 2. (10 x 15) / (10 + 15) = 6 ohms. Answer: 6 ohms. Why not the others: 25 ohms: this is the series combination. 12.5 ohms: this averages the resistances. 150 ohms: this does not divide by the sum.
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