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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
- Two positive ions, each carrying a charge q, are separated by a distance d
- Einstein’s photoelectric equation is
- If a spring of spring constant k stretched by a length x under tension T, the energy
- The charge flowing through a resistance R varies with time t as Q=at-bt²,
- The workdone in turning a magnet of magnetic moment M by an angle of 90⁰ from the magnetic
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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