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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 thermally insulated rigid container contains an ideal gas heated by a filament
- Efficiency of a Carnot engine is 50% when temperature of sink is 500K. In order
- Two bulbs when connected in parallel to a source take 60W each, the power consumed,
- At place on earth, the vertical component of earth’s magnetic field is √3 times
- A spring has time period T. It is cut into n equal parts. The time period of each part
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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