11Parallel Plate Capacitor No. CP79589-02Two Points within a Field No. CP75989-043Insulator and Conductor in a Field No. CP79589-01IVPoint and Plane No. CP79589-05VIFaraday Ice Pail No. CP79589-03Your design No. CP79589-06Figure 6 The Overbeck Electric Field Mapping Apparatus' six field plates.6. QUESTIONS1. Why are the equipotential lines near conductor surfaces parallel to the surface and why per-pendicular to the insulator surface mapped?2. Is it possible for two different equipotential lines or two lines of force to cross? Explain.3. Explain, with the aid of a diagram, why lines of force must be at right angles to equipotentiallines.4. Under what conditions will the field between the plates of a parallel plate capacitor be uni-form?5. How does the electric field strength vary with distance from an isolated charged particle?6. Sketch the equipotential lines for an isolated negatively charged particle, spacing the lines toshow equal difference of potential between lines.7. Compare the sketch in answer to Question 6 with the mapped field of the "Parallel PlateCapacitor." Account for the difference.8. Show that the electric field strength is equal to the potential gradient.9. What conclusions can you draw about the field strength and the current density at variousparts of sheet II, Figure 6.10. How much work is done in transferring an electrostatic unit of charge from the one terminal tothe other terminal in this experiment?11. Explain the lack of symmetry in the field of sheet 1, Figure 6.12. Sketch the field pattern of two positively charged small spheres placed a short distance fromeach other.13. Explain the pattern of the field found inside a Faraday "Ice Pail."

1. Why are the equipotential lines near conductor surfaces parallel to the surface and why per- pendicular to the insulator surface mapped? 2. Is it possible for two different equipotential lines or two lines of force to cross? Explain. 3. Explain, with the aid of a diagram, why lines of force must be at right angles to equipotential lines. 4. Under what conditions will the field between the plates of a parallel plate capacitor be uni- form?

1. Why are the equipotential lines near conductor surfaces parallel to the surface and why per- pendicular to the insulator surface mapped? 2. Is it possible for two different equipotential lines or two lines of force to cross? Explain. 3. Explain, with the aid of a diagram, why lines of force must be at right angles to equipotential lines. 4. Under what conditions will the field between the plates of a parallel plate capacitor be uni- form?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

11
Parallel Plate Capacitor No. CP79589-02
Two Points within a Field No. CP75989-04
3
Insulator and Conductor in a Field No. CP79589-01
IV
Point and Plane No. CP79589-05
VI
Faraday Ice Pail No. CP79589-03
Your design No. CP79589-06
Figure 6 The Overbeck Electric Field Mapping Apparatus' six field plates.
6. QUESTIONS
1. Why are the equipotential lines near conductor surfaces parallel to the surface and why per-
pendicular to the insulator surface mapped?
2. Is it possible for two different equipotential lines or two lines of force to cross? Explain.
3. Explain, with the aid of a diagram, why lines of force must be at right angles to equipotential
lines.
4. Under what conditions will the field between the plates of a parallel plate capacitor be uni-
form?
5. How does the electric field strength vary with distance from an isolated charged particle?
6. Sketch the equipotential lines for an isolated negatively charged particle, spacing the lines to
show equal difference of potential between lines.
7. Compare the sketch in answer to Question 6 with the mapped field of the "Parallel Plate
Capacitor." Account for the difference.
8. Show that the electric field strength is equal to the potential gradient.
9. What conclusions can you draw about the field strength and the current density at various
parts of sheet II, Figure 6.
10. How much work is done in transferring an electrostatic unit of charge from the one terminal to
the other terminal in this experiment?
11. Explain the lack of symmetry in the field of sheet 1, Figure 6.
12. Sketch the field pattern of two positively charged small spheres placed a short distance from
each other.
13. Explain the pattern of the field found inside a Faraday "Ice Pail."

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