Homework Help: physics

Posted by jewel on Monday, October 8, 2012 at 8:25pm.

copper has 8.5 x 10^28 electrons per cubic meter. (a) how many electrons are there in 30 cm length a 12 gauge copper wire (diameter 2.05 mm)? (b) if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the wire? (There are 6.24 x 10^18 electrons in 1 coulomb of charge.)

No one has answered this question yet.

Answer this Question

Related Questions

physics - A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 ...
physics! - A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43...
physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
physics - A copper wire has a circular cross section with a radius of 3.75 mm. ...
Environmental engineering - Lake Kickapoo, TX, is approximately 12 km in length...
physics - An iron wire has a cross-sectional area equal to 1.20 10-5 m2. Carry ...
Physics - A current of 4 A flows in a copper wire 10 mm in diameter. The density...
chemistry - boron-10 has an atomic number of 5. how many electrons are in this ...
chemistry - give the total number of protons and electrons in each atom Cr2+ 24 ...
physics - Drift velocity is best defined as a. the relationship between current ...

For Further Reading

First Name:
School Subject:
Answer: