Question

Four point charges are given as: +2q, +2q, −2q and –2q. Place these charges on an x-y coordinate system, with two of them are on the x and y axis, so that the electric field at point (3 cm, 3cm) would be zero. Find

i) Electric field at the origin if the above point charges magnitude is 5.0 μC.

ii) Potential energy of the above configuration.

Answer #1

Two point charges, Q1 = 3.6 μC and Q2 = -1.8 μC , are placed on
the x axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate x1 = − 5.0 cm (Figure 1).
At what point(s) along the x axis is the electric field zero?
Determine the x-coordinate(s) of the point(s).
At what point(s) along the x axis is the potential zero?
Determine the x-coordinate(s) of the point(s).

Two-point charges, Q1 = 3.0 μC and Q2 = -2.0 μC , are placed on
the x-axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate x1 = − 5.0 cm.
At what point(s) along the xx axis is the electric field zero?
Determine the xx-coordinate(s) of the point(s).
At what point(s) along the xx axis is the potential zero?
Determine the xx-coordinate(s) of the point(s).

Two point charges, Q1 = 3.6 μC and Q2 = -1.4 μC , are placed on
the xx axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate x1 = − 6.0 cm.
1. At what point(s) along the x axis is the electric field zero?
Determine the x-coordinate(s) of the point(s).
2. At what point(s) along the x axis is the potential zero?
Determine the x-coordinate(s) of the point(s).

Two point charges, Q1 = 3.6 μC and Q2 = -1.6 μC , are placed on
the x axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate. x1 = -4.0 cm
At what point(s) along the xx axis is the electric field zero?
Determine the xx-coordinate(s) of the point(s).
At what point(s) along the xx axis is the potential zero?
Determine the xx-coordinate(s) of the point(s).

Two point charges, Q1 = 3.5 μC and Q2 = -1.5 μC , are placed on
the x axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate x1 = − 6.0 cm (Figure 1).
A)At what point(s) along the x axis is the electric field zero?
Determine the x-coordinate(s) of the point(s). Show Steps.

Two point charges, Q1 = 3.3 μC and Q2 = -1.3 μC , are placed on
the x axis. Suppose that Q2 is placed at the origin, and Q1 is
placed at the coordinate x1 = − 4.0 cm. At what point(s) along the
x axis is the electric field zero? Determine the x-coordinate(s) of
the point(s). If there is more than one answer, enter your answers
in ascending order separated by commas. At what point(s) along the
x axis...

Two point charges are fixed in place along the x axis
as shown in the figure above. The charge Q1=-3
μμC is located at the origin. The charge Q2=4
μμC is a distance a = 0.46 m to the right of the
origin.
1)
Calculate the x component of the
electric field at point P a distance
h=0.32 m above the origin.
Ex = -0.115 × 106 N/C
Ex = -0.094 × 106 N/C
Ex = 0.264 × 106 N/C...

Two point charges, Q1 = 3.0 μC and Q2
= -1.9 μC ,are placed on the x axis. Suppose that
Q2 is placed at the origin, and Q1 is placed at
the coordinate x1 = − 3.0 cm (Figure 1).
1. At what point(s) along the x axis is the electric
field zero? Determine the x-coordinate(s) of the
point(s).
Express your answer using two significant figures. If there is
more than one answer, enter your answers in ascending order
separated...

Two point charges, Q1 = 2.9 μC and Q2
= -1.3 μC , are placed on the x axis. Suppose
that Q2 is placed at the origin, and Q1 is placed
at the coordinate x1 = − 4.0 cm (Figure 1).
Part A
Part complete
At what point(s) along the x axis is the electric field
zero? Determine the x-coordinate(s) of the point(s).
Express your answer using two significant figures. If there is
more than one answer, enter your answers...

Three point charges are placed on the x-axis. A charge of +2.0
μC is placed at the origin, -2.0 μC to the right at x = 50 cm, and
+4.0 μC at the 100 cm mark.
a. Find the net electric force (magnitude and direction) that
acts on the charge at the origin.
b. Find the net electric field (magnitude and direction) at x =
25 cm.
c. Find the net electric force (magnitude and direction) on a
charge Q...

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