The resistance of a conductor at 15 ° C is 16   Ω and at 100 ° C is 20   Ω .…

The resistance of a conductor at 15°C is 16 Ω and at 100°C is 20 Ω. What will be the temperature coefficient of resistance of the conductor?
  1. 0.010°C-1
  2. 0.033°C-1
  3. 0.003°C-1
  4. 0.042°C-1

Solution

16=R01+α15-To

20=R01+α100-T0

Assuming To=0°C, as a general convention.

⇒1620=1+α×151+α×100

⇒α=0.003C∘-1

Asked in: JEE Main 2021 (27 Jul Shift 2)

Practice more Current Electricity questions on Aicharya