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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2025 · Paper I, General Studies · Q3 of 120

Geo-Scientist Prelims 2025 General Studies Q3: For a given system of resistors having resistances R, 2R, R0 and 2R…

QuestionCurrent electricity / Wheatstone bridge

For a given system of resistors having resistances \(R\), \(2R\), \(R_0\) and \(2R\) (shown in the figure), what will be the value of resistance of the resistor \(R_0\), when there is NO current in the galvanometer \(G\)?

UPSC Combined Geo-Scientist Prelims 2025 Paper I (General Studies), Q3: figure printed with the question
  1. (a) \(R_0 = 0\)
  2. (b) \(R_0 = R\)
  3. (c) \(R_0 = 2R\)
  4. (d) \(R_0 = 4R\)

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