Question

The resistance of a wire is 5Ω at 50°C and 6Ω at 100°C. The resistance of the wire at 0°C will be (a) 2Ω (b) 1Ω (c) 4Ω (d) 3Ω

Answer 1

The resistance will be 4ohms. We can find it simply by studying the relation between the first two. As the resistance is increased by 1 ohm the temperature is increased by 50°c.so when the temperature will decrease by 50°c the resistance will also decrease by 1ohm.