A uniformly charged rod (length = 2.0 m, charge per unit length = 3.0 nC/m) is bent to form a semicircle. What is the magnitude of the electric field at the center of the circle?
a. 64 N/C
b. 133 N/C
c. 48 N/C
d. 85 N/C
e. 34 N/C
D
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