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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
- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
- An electric dipole of dipole moment p is aligned parallel to a uniform electric field E
- A proton is projected with a speed of 3×10⁶ m/s horizontally from east to west.
- A particle is kept at rest at the top of a sphere of diameter 42m.When disturbed slightly
- If the nucleus ²⁷₁₃Al has nuclear radius of about 3.6 fm
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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