If the Current Density in a Wire Is Given by J

Multiple Choice

If the current density in a wire is given by j = kr, 0 < r < R, where R is the radius of the wire, the current in the wire is

A) 2πkR³/3.
B) 3πkR³/2.
C) kR³/3.
D) kR².
E) kR²/2.