Question
Which of the following equations correctly relates the resistance (R) of a conductor to its length (l), area of cross-section (A), and resistivity (ρ)?
Asked in RRB ALP CBT 1 · 2026
Ohms Law · Physics
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Ohm’s law states V = IR when physical conditions such as temperature remain constant.
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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
7Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 2024, 2025, 2026
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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