What is the resistance of a nichrome wire at 0.0 ∘c if its resistance is 200.00 ω at 11.5 ∘c?

THIS USER ASKED 👇

What is the resistance of a nichrome wire at 0.0 ∘c if its resistance is 200.00 ω at 11.5 ∘c?

THIS IS THE BEST ANSWER 👇

The temperature of the resistor changes based on the change in temperature. The equation that describes the relationship between the two is:
R = R0[1+ alpha(T-T0)] where:
R is the new resistance we are looking for
alpha is the coefficient of resistance of temperature. For nichrome, alpha = 4×10 ^ -4 / C.
The standard temperature is T0 = 11.5
The resistance at T0 = 200 ohms is R0
T is the temperature at which we want to get R = 0

Substitute the equation for R as follows:
R = 200 [1+4*10^-4 (0-11.5)] = 199.08 ohm