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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A heavy nucleus at rest breaks into two fragments which fly off with velocities
- In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
- Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm
- A stone falls freely under gravity.It covers distances h₁,h₂ and h₃
- A plane polarised light is incident normally on a tourmaline plate. Its E vector make
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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