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. If vectors A=cos wti + sin wtj and B= cos wt/2 i + sin wt/2 j are functions of time,
  2. A particle moving in a straight line with uniform acceleration is observed
  3. A piece of iron is heated in a flame. It first comes dull red then becomes reddish
  4. The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
  5. If the velocity of an electron increases, then its de Broglie wavelength will