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NDA 2 2024 GAT, question 69

Topic: Physics

Q69

In which one among the following situations, the bulb ⊗⊗ would glow the most ? (Consider all batteries are the same)

  1. (a) Option (a)
  2. (b) Option (b)
  3. (c) Option (c)
  4. (d) Option (d)Correct answer

Solution.

Answer: (d) Option (d)

  1. Two identical cells in series provide twice the emf of one.
  2. Connecting the identical bulbs in parallel gives each bulb this full voltage; brightness scales with power V²/R under the ideal equal-resistance comparison.
  3. Thus diagram (d) gives the largest power per bulb.