Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CDS2026
Which one among the following statements regarding the electrical resistivity of a conducting wire is correct ?
- A The resistivity of the conductor increases if the length of the wire is increased.
- B The resistivity of the conductor decreases if the length of the wire is increased.
- C The resistivity of the conductor remains the same if the length of the wire is changed. ✓
- D The resistivity of the conductor increases if the cross-sectional area of the wire is increased.
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CDS2022
What is the correct sequence of resistivity of silver, nichrome and glass at room temperature ?
- A Silver < Nichrome < Glass ✓
- B Glass < Nichrome < Silver
- C Silver < Glass < Nichrome
- D Nichrome < Silver < Glass
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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