Question

Q1.(25pts) A nonuniform volume charge distribution with density p,= 100 C/m3 , lies within the spherical region of radius a 0.2m in free space. a) Find the electric field intensity at a point outside the charge region. (9pts) b) Find the potential at the surface of the spherical charge region. (9pts) c) Determine the force acting on a charge of 10 Coulombs located at Px(5m, 90°, 90°), Indicate the position and orientation of the force vector on the sketch below. (7 pts) P v y X

Answer 1

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|(Po tential outside Spheres () -f2. assuming poen Hel at Infinety to be 3.349 4TT to2 Soly 3.349 Molts UTT En So for potential atsfau fsphenical charje 2.349) Sa (9*/0 3.349 Ve 1so.705 Xjo volts LiTT at FForce on 3 349 4 TT t S2- S,90, 9D) ( So E at E a fore On lo c So