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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: - In the phenomenon of electric discharge through gases at low pressure,
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- Changing magnetic fields can set up current loops in nearby metal bodies
- If a magnetic substance is brought near the north or the south pole of a bar magnet
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In the phenomenon of electric discharge through gases at low pressure,
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- Changing magnetic fields can set up current loops in nearby metal bodies
- If a magnetic substance is brought near the north or the south pole of a bar magnet
- Light from the constellation Virgo is observed to increase in wavelength by 0.4%
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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