A 10 gauge copper wire carries a current of 20 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons.

Complete Question

A 10 gauge copper wire carries a current of 20 A. Assuming one free electron per copper atom, calculate the drift velocity of the electrons. (The cross-sectional area of a 10-gauge wire is 5.261 mm2.) mm/s

The drift velocity is

Explanation:

From the question we are told that

    The current on the copper is  

     The cross-sectional area is  

The number of copper atom in the wire is  mathematically evaluated

Where is the density of copper with a value

          is the Avogadro's number with a value

         Z  is the molar mass of copper with a value  

So

Given the 1 atom is equivalent to 1 free electron then the number of free electron is  

The current through the wire is mathematically represented as

substituting values

=>    

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j