Question

1.5
At room temperature (27.0 °C) the resistance of a heating element
is 100 N. What is the temperature of the element if the resistance is
found to be 117 . given that the temperature coefficient of the
material of the resistor is 1.70 x 104 c?
through a wire of length 15 m​

Answer 1

Answer

Room temperature, T = 27°C

Resistance of the heating element at T, R = 100 Ω

Let T1 is the increased temperature of the filament.

Resistance of the heating element at T1, R1 = 117 Ω

Temperature co-efficient of the material of the filament,

Therefore, at 1027°C, the resistance of the element is 117Ω.