Index for
Chapter 15
Electric Potential

1. Potential Energy

• electric potential energy
• Absent any other forces, charges will always spontaneously move in the direction that decreases their potential energy as quickly as possible.

2. Potential Energy of Point Charges

• $PE=k\frac{q_A{q}_B}{d}$

3. Action at a Distance

• Source charges create the electric field,
  while target charges react to the electric field.

4. Electric Potential

• $V=\frac{P{E}_T}{q_T}$
• $V=k\frac{q_s}{d}$ for a single point charge $q_s$

5. Equipotential Lines

• equipotential line
• $P{E}_T=q_{T}V$

6. The Height Metaphor

• Source charges create the landscape:
  Positive sources are peaks.
  Negative sources are pits.
• Target charges react to the landscape:
  Positive targets roll downhill.
  Negative targets roll uphill.

7. Potential Sources

8. Potential of Conductors

9. Capacitance

• capacitance
• farads
• capacitance ($C$) measured in Farads
• $C=\frac{Q}{\mathrm{\Delta }V}$

10. Energy of a Capacitor

11. Parallel-Plate Capacitors