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Question 38Asked in RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)

Why does a torch bulb glow only when the switch is turned on?

  1. ABecause the bulb is functional
  2. BBecause the bulb is in series with the cell
  3. CBecause the battery is charged
  4. DBecause the switch completes the circuit, allowing current to flow
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Correct answer: (D) Because the switch completes the circuit, allowing current to flow

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM)

This is question 38 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM). 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.