Answer to Question #228260 in Physics for Porco

Question

A nickel coil has a resistance of 13 Ω at 50°C. If the temperature coefficient of resistance at 0°C is 0.006/°C, the resistance at 0°C is

Answer 1

The resistance at 50°:

$$R=R_0(1+kt),\\ R_0=\frac{R}{1+kt}=10\Omega.$$