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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
- Which of the following is true for number of spectral lines in going from Lyman series
- If force is proportional to square of velocity, then the dimension of proportionality
- A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
- Masses of three wires of copper are in the ratio of 1:3:5 and their lengths
- An electric kettle has two heating elements. One brings it to boil in ten minutes
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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