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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 proton of mass 1.6×10⁻²⁷ kg goes round in a circular orbit of radius 0.10 m under
- The half life of a radioactive isotope ‘X’ is 20 years. It decays to another element Y
- A uniform wire of resistance 9Ω is joined end-to-end to form a circle. Then
- The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy
- If the dimensions of a physical quantity are givenby Mᵃ Lᵇ Tᶜ, then the physical
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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