Mastering Physics: Ch 21 HW Google Chrome https:// mastering physics.com 4726730

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Mastering Physics: Ch 21 HW Google Chrome https:// mastering physics.com 47267309 Session PHY 232 E20N University Physics ll Rayha Kabi Ch 21 HW Exercise 21.53 Resources previous l 13 of 15 l next Exercise 21.53 Part A A ring-shaped conductor with radius a 2.20cm has a What is the magnitude ofthe electric field at point P, which is on the positive x-axis atz 41.0cm total positive charge Q 30.130nC uniformly distributed around it. Figure 1) N/C E 6.93 Submit My Answers Give U Incorrect; Try Again: 8 attempts remaining Figure 1 of 1 Part B de What is the direction of the electric field at point P? direction direction dE dE Submit My Answers Give Up dE Correct Part C

Explanation / Answer

A)
Electric filed on the axis of ring at a distance x, E = k*Q*x/(x^2 + a^2)^(3/2)

= 9*10^9*0.13*10^-9*0.41/(0.41^2 + 0.022^2)^1.5

= 6.93 N/c

B) towards +x axis

I am also getting 6.93 N/c. I think this is the correct answer.

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