(25%) Problem 2: A point charge P is b 8.5 m above the center of a uniformly Z-a

Question

(25%) Problem 2: A point charge P is b 8.5 m above the center of a uniformly Z-axis charged ring of radius a F 0.46 m sitting in the xy plane with charge Q 8.5 HC Randomized Variables 0.0 b 8.5 8.5 a 0.46 m X-axis (-a,0,0) a 0.0 dE dExi dEyj dEzk Otheexpertta. G A 33% Part (a) Calculate the z component of the electric field at P in newtons per coulomb Grade Summary Deductions Potential Submissions 8 9 cos0 tan() HOME sin Attempts remaini 4 5 6 cotan0 asin acos0 4% per attempt) detailed view atan acotano sin 1 2 3 cosh() tanh() cotanho Degrees Radians BACKSPACE DEL CLEAR Hint Feedback give up! Submit Hints: Feedback: 33% Part (b) Calculate the x and y components of the electric field at P in newtons per coulomb A 33% Part (c) Assume b is very large. Now if b doubles, what happens to the magnitude of the Electric Field?

Explanation / Answer

EZ = k*Q*b/(b^2 +a^2)^3/2

= 9*10^9*8.5*10^-6*8.5/(8.5^2+0.46^2)^3/2

Ez =1054.189 N/C

c) if b is very large the

Ez = K*Q*b/(b^3)

= K*Q/b^2

now if b doubles Ez decreses by 4

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