Problem 3: A q₁ = -10.0 nC point charge and a q2 = +20.0 nC point charge are 15 cm apart on the x-axis. 1. What is the electric potential at the point on the x-axis where the electric field is zero? 2. What is the electric field at the point on the x-axis, between the charges, where the electric potential is zero? a) In the figure below, where could a point with E= 0 be located (to the left, to the right, or between the charges)? If the distance between this point and q, is r, what should its distance from q2 be? (use 1921/1911 = 2 and the fact that electric field strength is proportional to q/r2) Mark the point E= 0 in the figure and compute its coordinate. 8-10 nC g₂=20nc XEO b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by charges q, and q2. x=L= 15cm c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0). If you just use 1921/1q11-2 and the fact that electric potential is proportional to q/r, the calculation should be very simple. g₁=-10nC oܪx g₂=20nc ✪ x=L= 15cm d) What is the direction of the electric field E at the point V = 0 (draw the vector in the figure). Compute its magnitude and express E in the vector form.
Problem 3: A q₁ = -10.0 nC point charge and a q2 = +20.0 nC point charge are 15 cm apart on the x-axis. 1. What is the electric potential at the point on the x-axis where the electric field is zero? 2. What is the electric field at the point on the x-axis, between the charges, where the electric potential is zero? a) In the figure below, where could a point with E= 0 be located (to the left, to the right, or between the charges)? If the distance between this point and q, is r, what should its distance from q2 be? (use 1921/1911 = 2 and the fact that electric field strength is proportional to q/r2) Mark the point E= 0 in the figure and compute its coordinate. 8-10 nC g₂=20nc XEO b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by charges q, and q2. x=L= 15cm c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0). If you just use 1921/1q11-2 and the fact that electric potential is proportional to q/r, the calculation should be very simple. g₁=-10nC oܪx g₂=20nc ✪ x=L= 15cm d) What is the direction of the electric field E at the point V = 0 (draw the vector in the figure). Compute its magnitude and express E in the vector form.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter26: Electric Potential
Section: Chapter Questions
Problem 65PQ: Two 5.00-nC charged particles are in a uniform electric field with a magnitude of 625 N/C. Each of...
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