Two resistors of 6 Ω and 3 Ω are connected in parallel. What is the total resistance?
Answer and explanation
Correct answer: D. 2 Ω
- Step 1: For parallel: 1/R = 1/6 + 1/3 = 1/6 + 2/6 = 3/6.
- Step 2: R = 6 ÷ 3 = 2 Ω.
Answer
2 Ω.
Why not the others: 9 Ω: the resistances were added. 4.5 Ω: the mean was found. 18 Ω: the resistances were multiplied.
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