Question

When 5v potential difference is applied across a wire of length 0.1 m the drift speed of electron is 2.5 into 10 raise to power minus 4 m per second at the electron density in the wire is 8 into 10 raise to power 8 per metre cube per second cube calculate the resistivity of the material of wire?

Answer 1

Answer:

When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 × 10–4 ms–1. If the electron density in the wire is 8 × 1028 m–3, the resistivity of the material is close to: 1.6 x 10-8Ωm.