12. Positive charge Q is distributed uniformly throughout an insulating sphere of radius R, centered at the origin. A point particle with positive charge Q is placed at x = 2R on the x-axis. Find the magnitude and direction of the electric field at x = R/2 on the x-axis. A. B. C. D. E. 170 72 R2 positive.x-direction Q 8.л€¸R² Q 9m² R² Q 72.me R² Q 72лe R² Ans: E positive x-direction negative x-direction negative .x-direction positive x-direction

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12.
Positive charge Q is distributed uniformly throughout an insulating sphere of radius R, centered at the origin. A
point particle with positive charge Q is placed at x = 2R on the x-axis. Find the magnitude and direction of the
electric field at x = R/2 on the x-axis.
A.
B.
C.
D.
E.
170
72л R²
Q
8лε R²
positive x-direction
; positive x-direction
Q
9π€¸R²¹
Q
72μ€ R²
Ans: E
; negative x-direction
Q
72л€ R²
negative x-direction
positive x-direction
Transcribed Image Text:12. Positive charge Q is distributed uniformly throughout an insulating sphere of radius R, centered at the origin. A point particle with positive charge Q is placed at x = 2R on the x-axis. Find the magnitude and direction of the electric field at x = R/2 on the x-axis. A. B. C. D. E. 170 72л R² Q 8лε R² positive x-direction ; positive x-direction Q 9π€¸R²¹ Q 72μ€ R² Ans: E ; negative x-direction Q 72л€ R² negative x-direction positive x-direction
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