Question
The free ends of an electric circuit comprising a cell and switch are connected one by one to wires A, B, C and D.
Which of these wires would produce least amount of heat ?Wire length (cm) Area of Cross-section (m2) A 10 10 × 10⁻⁸ B 10 8 × 10⁻⁸ C 12 6 × 10⁻⁸ D 5 10 × 10⁻⁸
| Wire | length (cm) | Area of Cross-section (m2) |
| A | 10 | 10 × 10⁻⁸ |
| B | 10 | 8 × 10⁻⁸ |
| C | 12 | 6 × 10⁻⁸ |
| D | 5 | 10 × 10⁻⁸ |
Asked in CTET (Maths & Science) · 2026
Electric Power · Physics
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Questions Asked from Electrical Power: P = VI, I²R & V²/R in Previous Exams
See how often Electrical Power: P = VI, I²R & V²/R has appeared in previous-year questions across major government exams.
11UPSC Questions Asked in These Years:2011, 2012, 2013, 2014, 2015, 2016, 2018, 2020, 2022, 2023, 2024
10SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
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14State PSC Questions Asked in These Years:2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2023, 2024, 2025
Electrical Power: P = VI, I²R & V²/R has appeared in 42 previous-year exam questions, most frequently in State PSC, UPSC and SSC.
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