The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.

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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,

Related Questions:

1. When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
2. A charged particle of mass m and charge q moves along a circular path of radius
3. A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature
4. A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
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Topics: Current Electricity (136)
Subject: Physics (2479)

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