Physicshard · Past Paper
Three identical resistors are first connected in series and then in parallel. The ratio of their equivalent resistances (Series : Parallel) will be:
A3:1
B1:3
C9:1
D1:9
✓ Correct Answer: C — 9:1
R_s = 3R. R_p = R/3. R_s/R_p = 3R / (R/3) = 9.
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