Topic Power
Asked 8 times across 4 UPSC exams over 12 years (2014–2026), peaking in 2023.
Key insights
- Most tested in CDS — 4 of 8 PYQs
- Most asked in 2023
- Recurs across 7 years (2014–2026)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CDS 2014 → CAPF 2019 → GEO 2021 → NDA 2023
How the concept evolved
Rising — more than half its appearances (7 of 8) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2026
A constant power machine pulls a block on a smooth horizontal surface. Which one of the following correctly describes the relation between speed of the block (v) and time (t)?
- A v = t
- B v = √t ✓
- C v = t²
- D v = t^(3/2)
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
CDS2025
Assume 'A' does 500 J of work in 'x' minutes and 'B' does 1000 J of work in 20 minutes. If the power delivered by 'A' is P1 and 'B' is P2 and P1 = 2P2, then 'x', in minutes is :
- A 10
- B 5
- C 20
- D 25
Answer key not yet available (pending official release)
Science & Technology › Physics & Chemistry
CDS2023
A 100 W electric bulb is used for 10 hours a day. How many units of electrical energy are consumed by the bulb in 3 days? (1 unit = 1 kWh)
- A 3.00 ✓
- B 1.08
- C 2.16
- D 0.33
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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