A Non-Conducting Pipe Has a Uniform Charge Density of 50 $\times$

Multiple Choice

A non-conducting pipe has a uniform charge density of 50 C/m³.The inner radius of the pipe is 25 cm,while the outer radius is 35 cm.Calculate the magnitude of the electric field at r = 30 cm.

A) 5.2 $\times$ 10⁹ N/C
B) 2.6 $\times$ 10¹¹ N/C
C) 8.2 $\times$ 10¹⁰ N/C
D) 4.7 $\times$ 10¹¹ N/C
E) 4.9 $\times$ 10¹⁰ N/C