Question

derive relation bw current and drift velocity​

Answer 1

Answer:

The current density at a point in the conductor is defined as the current per unit cross-section area.Thus if the charge is flowing per unit time uniformaly over the area of crosss-section A of the conductor,then current density J at any point on that area is defined as

J=I/A

Explanation:

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Answer 2

Explanation:

If n is the number of free electrons per unit volume of the conductor, then the total number of free electrons in the conductor=A/n. ... Hence the current flowing through a conductor is directly proportional to the drift velocity. Explanation and Example. In a conductor there are large number of free electrons