The lines show the equipotential contours in the plane of three point charges, Q1, Q2, and Q3. The values of the potentials are in kV as indicated for the +5, 0, and -5 kV contours. The positions of the charges are indicated by the dots.

the work required to move a charge of -0.51×10-12C from i to b is 3.06×10-9 J

The electric potential due to a point charge is V = kQ/r and therefore close to a charge the potential (V ) will have the same sign as the charge (Q) and the magnitude will be large due to small r. From this we know that Q1 and Q2 are negative while Q3 is positive. Note that there are equipotential lines with a magnitude of 5 kV around each of the charges. Since |V | is the same for each, this means Q/r must be the same. Therefore, a charge that has a larger r must have a larger Q. Therefore, Q3 has the largest magnitude charge since the distance to the |V | = 5 kV line is greatest. Also, Q1 is the largest negative charge since Q3 is positive.
At point k the electric ...

Solution Summary

This solution contains step-by-step calculations and in-depth explanations to determine the size of electric field, size of force and size of Q3 using equations for electric field with equipotential lines, electric field force and charge.

Please show all work and diagrams plus equations used to solve problem. Thanks!
Two point particles, with charges of q1 and q1 are placed a distance r apart. The electricfield is zero at a point P between the particles on the line segment connecting them. We conclude that: (answer C - why)
a) q1 and q2 must have the sa

Point charges q1=- 5.00 nC and q2=+ 5.00 nC are separated by distance 3.80 mm, forming an electric dipole.
A) Find the magnitude of the electric dipole moment in Cm.
B) The charges are in a uniform electricfield whose direction makes an angle 36.5 degrees with the line connecting the charges. What is the magnitude of this

y l
l
a (+q)
l
l
-------l--------x
l
-a (+2q)
l
l
Two point charges are fixed on the y-axis at the locations shown in the figure above. A charge of +q is located at y = a and a charge of +2q is located at y = -a. Express your answers to a an

Please help with the following problems.
1. In the figure, two charges q1=+3.0uC and q2=-2.0uC are separated by 6.0cm.
a. Find the electric forces exerted on each other (magnitude and direction)
b. Find the electricfield from point P, which id 4.0cm to the right q2 (megnitude and direction).
c. Find the positions along t

Hi. Can someone please explain to me what exactly the electric potential is and how it differs from electric potential energy -- not with equations, but in prose. (Or at least, with both.) I can read the equation, but I don't really understand what electric potential IS. What is its significance?
Thank you!

The electricfield is defined as the electrostatic force divided by the charge experiencing this force. The Earth's electricfield is directed radially inward and is about 150 N/C at the Earth's surface. This arises because in a region of the atmosphere known as the ionosphere, parts of the spectrum of the radiation from the sun

Problem 1
A charge is moved from one place to another in an electricfield. In which of the following situations will the change in potential energy be NON-ZERO?
the charge is only moved perpendicular to all electricfield lines that it crosses
the charge remains unmoved
the charge is moved along an equipotential surfa

1. In your own words, explain the difference between a conductor, an insulator, and a semiconductor. Give an example of each to illustrate your comparison.
2. Explain the difference between charging by induction and charging by contact. Include details of how the charging occurs.
3. If two equal charges are separated by a

Question: Two charges, -18 and +4.0 microcoulombs, are fixed in place and separated by 3.0 meters. At what spot along a line through the charges is the net electricfield zero? Locate this spot relative to the positive charge. Let the positive charge be at x=0 and the negative charge be at x=3.0 meters. Make sure the answer is i