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The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C. If its temperature coefficient of resistance be 0.005 per ⁰C, its resistance will become 200Ω at a temperature of
Options
(a) 200⁰C
(b) 300⁰C
(c) 400⁰C
(d) 500⁰C
Correct Answer:
400⁰C
Explanation:
Let Ro be the resistance of bulb filament at at 0°C,
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car accelerates from rest at constant rate for first 10s and covers a distance x.
- The electric field associated with an e.m. wave in vacuum is given by
- In Bohr model of hydrogen atom, the force on the electron depends on the principal
- Two coils of self inductance 2 mH and 8 mH are placed so close together
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Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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