A 6 ohm and a 3 ohm resistor are connected in parallel. What is their combined resistance?
Answer and explanation
Correct answer: B. 2 ohm, from 1/R = 1/6 + 1/3 = 1/2
- Step 1: For parallel resistors . Step 2. , so ohm. Answer: 2 ohm. Why not the others: 9 ohm is the series value; 4.5 ohm is the mean; 3 ohm is just the smaller resistor.
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