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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
- The de-Broglie wavelength of an electron is the same as that of a 50 KeV X-ray photon.
- In an NPN transistor the collector current is 24 mA. If 80% of the electrons
- Four point masses, each of value m, are placed at the corners of a square ABCD
- A disc of mass 100 g is kept floating horizontally in air by firing bullets
- For a satellite escape velocity is 11 kms⁻¹.If the satellite is launched at an angle
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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