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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,
Related Questions: - A uniform electric field and uniform magnetic field are acting along the same
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A uniform electric field and uniform magnetic field are acting along the same
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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