Question
A metal rod is connected across a fixed potential difference and produces heat at a rate P due to the current flowing through it. If its resistance is halved while keeping the same potential difference, what happens to the rate of heat production?
Asked in Delhi Head Constable AWO TPO · 2025
Electric Power · Physics
Exam PYQ4 Options
Quick Revision
Resistors in series carry the same current, and their resistances add.
Correct AnswerCorrect option for this question
Learn Electric Power in 60 Seconds
Need a quick concept refresh? This video covers Electrical Power: P = VI, I²R & V²/R with concise, exam-ready explanations.
Everything you need to learn, practice & excel — in one place.
3,000+ Video-Based Study Material
PYQ-Based Quizzes
4,000+ Informative Audiobooks
6,300+ Full-Length Mock Tests
Daily Current Affairs
40,000+ PYQs
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.
2-Minute Revision Notes
Revise Electric Power and Its Related Concepts
Strengthen key concepts with exam-focused visual notes for faster revision.
Explore More Questions
Continue practising by chapter, topic and related subjects.
One question solved. Keep going.
Continue with the next Current Electricity question and build your accuracy one question at a time.