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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 circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
- Eddy currents are used in
- Complete the reaction: ₀n¹+ ₉₂U²³⁵→₅₆Ba¹⁴⁴+……..+3n
- Time period of the rotation of the earth about its own axis is 24 hour
- Two beams of light having intensities I and 4I interfere to produce a fringe pattern
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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