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
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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