is the 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 q₁ is r, what should its distance from 92 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. q=-10nC g2=20nC e x=0 + x=L= IS cm b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by charges q1 and 92. c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0). If you just use lq21/1911 = 2 and the fact that electric potential is proportional to q/r, the calculation should be very simple. 8-10nC 82=20nC x=0 X=L= IS cm 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.
is the 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 q₁ is r, what should its distance from 92 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. q=-10nC g2=20nC e x=0 + x=L= IS cm b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by charges q1 and 92. c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0). If you just use lq21/1911 = 2 and the fact that electric potential is proportional to q/r, the calculation should be very simple. 8-10nC 82=20nC x=0 X=L= IS cm 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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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 E = 0 be located (to the left, to the right, or between
the charges)? If the distance between this point and q₁ 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.
8-10nC 82=20nC
-0-
x = 0
X=L= IS cm
b) Compute the electric potential at the point E = 0 as a sum of potentials created in that point by
charges q1 and 92.
c) In the figure below, mark the point between the charges where the electric potential is zero (V = 0).
If you just use q21/1911 = 2 and the fact that electric potential is proportional to q/r, the calculation should
be very simple.
8-10nC 82=20nC
·e·
x=0
x=L= IS cm
*
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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