V:56) 4. Current density is given in cylindrical coordinates as J= -10ʻzSa, A/m? in the region 0sp< 20 μη: forp 2 20 μm . J-0.a) Find the total current crossing the surface z = 0.1 min the az direction.b) If the charge velocity is 2*10° m/s at z = 0.1m, find pyc) If the volume charge density at z = 0.15 m is -2000 C/m', find the charge velocitythere.

Given:- Current density J = -1016 z15 azA/m2 region 0≤ ρ≤20 μm…

4. Current density is given in cylindrical coordinates as J = -10ʻza, A/m? in the region 0s ps 20 um; for p 2 20 um. J= 0. a) Find the total current crossing the surface z = 0.1 min the a, direction. b) If the charge velocity is 2 10 m/s at z = 0.1m, find py c) If the volume charge density at z = 0.15 m is -2000 C/m', find the charge velocity there.

4. Current density is given in cylindrical coordinates as J = -10ʻza, A/m? in the region 0s ps 20 um; for p 2 20 um. J= 0. a) Find the total current crossing the surface z = 0.1 min the a, direction. b) If the charge velocity is 2 10 m/s at z = 0.1m, find py c) If the volume charge density at z = 0.15 m is -2000 C/m', find the charge velocity there.