13. Positive charge Q is distributed uniformly throughout aninsulating sphere of

Question

13. Positive charge Q is distributed uniformly throughout aninsulating sphere of radius R, centered at the origin. A particle with a positive charge Q isplaced at x = 2R on the x axis. The magnitude of the electric field at x = R/2 on the x axisis: A) Q/4 5 0R2 B) Q/8 5 0R2 C) 7Q/18 5 0/R2 D) 11Q/18 5 0R2 E) none of these 13. Positive charge Q is distributed uniformly throughout aninsulating sphere of radius R, centered at the origin. A particle with a positive charge Q isplaced at x = 2R on the x axis. The magnitude of the electric field at x = R/2 on the x axisis: A) Q/4 5 0R2 B) Q/8 5 0R2 C) 7Q/18 5 0/R2 D) 11Q/18 5 0R2 E) none of these

Explanation / Answer

The field at the point r

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