Two uniform rods, each of length 2.0 m, are bent to form semicircles. One rod has a charger per unit lent of 1.5 nC/m, and the other has a charge per unit length of –1.5 nC/m. The semicircles are joined to make a circle. What is the magnitude of the electric field at the center of the circle?

a. 42 N/C
b. 84 N/C
c. 34 N/C
d. 68 N/C
e. 0


b

Physics & Space Science

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