To learn to apply the concept of current density and microscopic Ohm's law.
A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric field E in the cable is 0.062 newtons per coulomb.
(a) What electric field (E') would have been required to create a current of 30.0 amperes in an aluminum wire of the same diameter? The resistivity (rho) of aluminum is 2.75 x 10^-8 ohm-meters. Express your answer in newtons per coulomb.

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.