A positively charged particle is moving in the +y-direction when it enters a reg

Question

A positively charged particle is moving in the +y-direction when it enters a region with a uniform electric field pointing in the +x-direction. Which of the diagrams below shows its path while it is in the region where the electric field exists? The region with the field is the region between the plates bounding each figure. The field lines always point to the right. The x-direction is to the right; the y-direction is up. 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? 64 N/C 133 N/C 48 N/C 85 N/C 34 N/C

Explanation / Answer

2) positive charge alsways attratcted to wards the negative charegd plate

so option d is correct

3) here l = pi*r

r = 2/3.14 = 0.637 m

E = 2k*lambda/r

E = 2*9*10^9*3*10^-9/0.637

E = 84.7 N/C

option d is correct

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