Two resistors, 6 Ω and 3 Ω, are in parallel. What is their equivalent resistance?
A4.5 Ω
B2 Ω
C9 Ω
D18 Ω
Answer & Solution
Correct answer: B. 2 Ω
1/R = 1/6 + 1/3 = 1/2, so R = 2 Ω.
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