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Central Board of Secondary Education · English · Class 10 · Science

Board exam · Science · 2026

15 questions · One at a time

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1
MCQ2 marks

A piece of wire of resistance RR  is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is RR' , then the ratio RR\frac{R}{R'}  is:

  • A.125\frac{1}{25}
  • B.15\frac{1}{5}
  • C.55
  • D.2525Correct
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