to determine the resistivity of a metal

Question 1

What to start?

Answer 1

Measure diameter of constantan wire (micrometer), 5 - 10 times.

Question 2

After micrometer?

Answer 2

Wire is clamped to ruler, with one end to the circuit at 0.

Question 3

After clamping?

Answer 3

Set up ammeter and voltmeter.

Question 4

After setup?

Answer 4

Vary distance with flying lead, avoid heating with short time.