6Electric Field and Electric Potential of a Point Charge What is zero electric potential?How do I calculate electric potential due to a point charge?Observations
7Electrical Potential Energy of Two Charges What about Superposition principle?How do I calculate it?What if?
8Examples Find the electric potential 1.0 cm from a proton. What is the potential difference between two points that are 1 and 2 cm apart?
9ExamplesTwo point charges are on the y axis, one of magnitude 3x10-9 c at the origin and a second of magnitude 6.0 x 10-9 c at y=30 cm. Find the potential at y=60 cm.
10Conductors in Equilibrium What happens to charge?What about electric field and potential?Electric fieldPotential
11The Electron Volt What is it? What are its units? Some comparisons Electrons in normal atoms have energies of 10’s of eVExcited electrons have energies of 1000’s of eVHigh energy gamma rays have energies of millions of eV
12Equipotentials and Electric Fields Lines – Positive Charge What is it?How about work done?How about electric field lines?Dipole
13CapacitanceWhat is it?How do I find it?What are its SI units?
14Parallel-Plate Capacitor ConstructionHow does geometry play its part?How does the charge build up on the plates?What does the electric field look like?
15Applications of Capacitors – Computers Computers use capacitors in many ways
16Capacitors in Circuits What is a Circuit?How do you represent a circuit?How do I connect a capacitor in a circuit?What happens when a capacitor is connected in a circuit?What different ways can one connect a capacitor in a circuit?
17Capacitors in Parallel Total chargePotential differenceEquivalent capacitance
18Equivalent CapacitorHow do I calculate equivalent capacitance?
19Capacitors in Series How do I connect capacitors in series? What happens when capacitors are connected in series?The potential differenceHow do I calculate equivalent capacitance?How do I calculate the energy stored in a capacitor?
20Medical Application Defibrillators When fibrillation occurs, the heart produces a rapid, irregular pattern of beatsA fast discharge of electrical energy through the heart can return the organ to its normal beat pattern
21Capacitors with Dielectrics What is a dielectric?How does it affect capacitance?What is dielectric strength?Atomic view of dielectrics
22ExamplesA capacitor of 4 micro farad is connected across the a 12 volt battery. What is the charge on each plate?
23ExamplesTwo capacitors are connected in series across a 400 V power source. What is the charge on each capacitor?
24ExamplesTwo capacitors are connected in parallel across a 400 V power source. What is the charge on each capacitor?