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Question 39Asked in BPSC TRE 3.0 (2024) Computer Science Class 11-12 + 18 more papers

A piece of wire of resistance R is cut into 5 equal parts. These parts are then connected in parallel. If the equivalent resistance of the combination is…

A piece of wire of resistance R is cut into 5 equal parts. These parts are then connected in parallel. If the equivalent resistance of the combination is R', then the ratio R/R' is ___
  1. A1/25
  2. B1/5
  3. C25
  4. DMore than one of the above
  5. ENone of the above
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Correct answer: (C) 25

Explanation

Each part has resistance R/5; five equal parts in parallel give R' = (R/5)/5 = R/25, so R/R' = 25.

From BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper

This is question 39 of BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.

Asked in 19 papers