Under an external electric field electrons drift slowly inside the conductor. 1. The velocity of drift is

Question

Under an external electric field electrons drift slowly inside the conductor.

1. The velocity of drift is

• 1 mm/*
• 105 m/*
• 3 × 108 m/*
• 3 × 109 m/*

1. What is meant by relaxation time?

2. Write an expression for drift velocity in terms of relaxation time.

3. When temperature increases what happens to drift velocity?