What is r? Remember, r is just the distance from the point at which we are...

 

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What is r? Remember, r is just the distance from the point at which we are calculating the electric field (which is point P) to the place where the differential charge dq is located (which is at x). However, this will depend upon our choice of origin. First, we'll try it with the origin (x = 0) placed at the left end of our rod. P. d r Y X L dQ What is r? Remember, r is just the distance from the point at which we are calculating the electric field (which is point P) to the place where the differential charge dq is located (which is at x). However, this will depend upon our choice of origin. First, we'll try it with the origin (x = 0) placed at the left end of our rod. P. d r Y X L dQ

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Answer The electric field due to an elementary charge dq is expressed as dEkdQr 2 r wh... View the full answer