1 Capacitance Define capacitance and its unit Solve

Also demonstrates energy stored in a capacitor 4 Charge and Discharge a Capacitor 1.

5 Discuss Parallel Plate Capacitors A parallel place capacitor consists of two parallel conductive

8 HL: Solve Problems The plates of an air filled parallel plate capacitor have

11 Give Uses of Capacitors Tuning radios. Flash guns (e. g. old camera flashes).

16 Demonstrate that Capacitors Conduct A. C. but not D. C. 1. Connect a

Slides: 16

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1 Capacitance Define capacitance and its unit. Solve problems about capacitance. Demonstrate charge-discharge of a capacitor. Discuss the factors which affect the capacitance of a parallel plate capacitor. HL: Demonstrate parallel plate capacitors factors. HL: Solve problems about parallel plate capacitors. HL: Solve problems about energy stored in a capacitor. Know and demonstrate that capacitors conduct AC but not DC. Give some uses of capacitors.

2 Define Capacitance

3 Solve Problems

Also demonstrates energy stored in a capacitor 4 Charge and Discharge a Capacitor 1. Connect a power supply to a capacitor (charging). 2. Remove the power supply and replace it with a bulb. 3. Note that the bulb will light for a moment, then go dim as the capacitor discharges. 4. This shows that energy was stored in the capacitor.

5 Discuss Parallel Plate Capacitors A parallel place capacitor consists of two parallel conductive plates separated by an insulating region called a dielectric. When charged, the plates store equal and opposite amounts of charge.

6 Discuss Parallel Plate Capacitance

7 HL: Solve Problems

8 HL: Solve Problems The plates of an air filled parallel plate capacitor have a common area of 40 cm 2 and are 1 cm apart. The capacitor is connected to a 12 V d. c. supply. Calculate the capacitance of the capacitor. Calculate the magnitude of the charge on each plate. What is the net charge on the capacitor?

9 HL: Demonstrate Parallel Plate Caps

10 HL: Demonstrate Parallel Plate Caps

11 Give Uses of Capacitors Tuning radios. Flash guns (e. g. old camera flashes). Smoothing signals. Filtering signals.

12 HL: Solve Problems about Energy

13 HL: Solve Problems about Energy

14 HL: Solve Problems about Energy

15 HL: Solve Problems about Energy

16 Demonstrate that Capacitors Conduct A. C. but not D. C. 1. Connect a capacitor and light bulb to a d. c. power supply. 2. Note the bulb does not light. 3. Replace the d. c. power supply with an a. c. power supply. 4. Note the bulb lights. 5. Thus, capacitors conduct a. c. but not d. c.