A Spherical Shell of Radius 9 $\sigma$ = 90 NC/m²

question 57

Multiple Choice

A spherical shell of radius 9.0 cm carries a uniform surface charge density $\sigma$ = 9.0 nC/m².The electric field at r = 8.9 cm is approximately

• A)1.0 kN/C
• B)0.13 kN/C
• C)0.32 kN/C
• D)zero
• E)0.65 kN/C