A cylindrical wire is carrying a current that is non-uniform in both space and t

Question

A cylindrical wire is carrying a current that is non-uniform in both space and time and can be described by the function s(r,t)=5(r2-3)t3.

a) 1. What units should the %u20185%u2019 in the above equation have in order for the units to work out in SI units?

b) 2.   Find an equation that describes magnetic field inside the wire due to the current as a function of r from the center of the wire.

c) 3.If all the numbers in the equation given have the appropriate SI units, how many Coulombs of charge go by a point in the wire after 3ms?  How many electrons does this represent?..

Explanation / Answer

www.physics.sjsu.edu/becker/physics51/mag_field.htm

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