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Up: Science 1 Physics Final Exam, April 1999
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The arrangement of charges shown is referred to as a linear quadrupole.
- 1.
- [4 marks]
Draw either the equipotentials
or the electric field lines
around the quadrupole.
I have drawn
equipotentials
electric field lines.
- 2.
- [4 marks]
Find the total electrostatic energy of this system of charges.
- 3.
- [4 marks]
Show that the electrostatic potential at a point (x,0)
on the x axis drops off approximately as x-3 for .