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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
- When the length of the vibrating segment of a sonometer wire is increased by
- A body of mass m is accelerated uniformly from rest to a speed v in a time T
- Rate of photoelectric emission is proportional to
- Two capacitors having capacitances C₁ and C₂ are charged with 120V and 200V batteries
- A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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