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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
- A photocell employs photoelectric effect to convert
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- Perfectly black body radiates the energy 18 J/s at 300K. Another ordinary body of e=0.8
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
- A car sounding a horn of frequency 100 Hz passes an observer. The ratio
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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