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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The acceleration of an electron in an electric field of magnitude 50 V/cm,
- In the given (V – T) diagram, what is the relation between pressure P₁ and P₂?
- Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- A bullet loses 1/20 of its velocity after penetrating a plank.How many planks
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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