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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
- According to Hook’s law, force is proportional to
- One coolie takes 1 minute to raise a suitcase through a height of 2 m
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- The equation of state for 5 g of oxygen at a pressure P and temperature T,
- If 10000 V is applied across an X-ray tube, what will be the ratio of de-Broglie
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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