A nonconducting 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 = 40 cm.
A) 6.8 × 1011 N/C
B) 8.5 × 1011 N/C
C) 4.2 × 1011 N/C
D) 1.3 × 1011 N/C
E) 8.7 × 1010 N/C
Correct Answer:
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