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.
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter16: Electrical Energy And Capacitance
Section: Chapter Questions
Problem 18P: A positive point charge q = +2.50 nC is located at x = 1.20 m and a negative charge of 2q = 5.00 nC...
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Transcribed Image Text: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 = 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 qz be? (use
1921/1911 = 2 and the fact that electric field strength is proportional to q/r²) Mark the point = 0 in the
figure and compute its coordinate.
8₁=-10 nC
g₂=20nc
νέο
x=L= 15cm
b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by
charges q, and qz.
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.
8₁=-10 nC g₂=20nC
✪
x=L= 15cm
X÷O
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.
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