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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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- A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which pair is isotonic?
- A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
- A block of 2 kg is kept on the floor. The coefficient of static friction is 0.4
- If alternating source of primary coil on transformer is replaced by a Laclanche cell
- A potentiometer wire of length L and a resistance r are connected in series with
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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