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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
- If the angle of minimum deviation is 60° for an equilateral prism, then the refractive
- In a ionised gas,the mobile charge carriers are
- Equal currents are passing through two very long and straight parallel wires
- If vₑ is escape velocity and vₙ is orbital velocity of a satellite
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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