Navigate

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

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,

AIEEE2006
admin:

Related Questions

  1. Three blocks A,B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact
  2. The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
  3. The electric potential V at any point (x,y,z) all in meters in space is given by
  4. An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic
  5. A thermocouple of negligible resistance produces an e.m.f. of 40 µV/⁰C in the linear range