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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
- For having large magnification power of a compound microscope
- A road of width 20 m forms an arc of radius 15 m,its outer edge is 2m higher than
- For a parallel beam of monochromatic light of wavelength λ diffraction is produced
- Masses of 3 wires of same metal are in the ratio 1:2:3 and their lengths
- The primary of a transformer when connected to a dc battery of 10 volt draws a current
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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