The electron density in copper is 8.49 × 1028 electrons/m3. When a 1.00 A current is present in a copper wire with a 0.40 cm2 cross-section, the electron drift velocity, in m/s, with direction defined relative to the current density, is

Drift velocity in m/s is .

Explanation:

Formula for Drift Velocity is:

Where I is the current

n is the number of electrons in 1 or the electron density

A is the area of cross section and

q is the charge of one electron.

We are given the following:

n =

I = 1 A

A = 0.40 = 40

We know that q =

Putting all the values to find drift velocity:

So, drift velocity in m/s is .

answer; ///i believe that the correct answer is (carbon); good luck

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.