Question
Which device relies on the heating effect of current to protect circuits and appliances by intentionally melting to break the circuit when the current exceeds a specified limit?
Asked in RRB Group D · 2025
Electric Power · Physics
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A fuse is connected in series and melts when excessive current flows.
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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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