Quarknet Intro.

1
Quarknet Intro.

• Teaching style
• Lecture discussion
• Outline presentation
• Big Picture
• Student knowledge

2
Playground circuits
3
Slide rules
4
The ladder and single slide

• Climbing the ladder
• Top Vs. Bottom?
• What is a ladder?
• Sliding down the slide
• Top Vs. Bottom?
• What is a slide?
• Total energy/potential change(s)

5
Tall ladders and short slides (and vice versa)

• Total energy/potential changes
• Current

6
Slides in series

• Series?
• Current
• Total energy/potential change(s)
• Energy/potential changes per slide

7
Slides in parallel

• Parallel?
• Current
• Current at a node
• Potential and potential energy changes

8
Parallel and series combinations

• Rule reminders
• Total energy/potential changes
• Current at a node
• What is a ladder?
• What is a slide?
• Example

9
ELECTRIC CIRUITS VS. PLAYGROUND CIRCUITS

• The same rules (no further comment, lets look at
  some examples)

10
Batteries

• What is a battery?
• Potential difference

11
Resistors

• What is a resistor?

12
A Battery and a resistor

• Total energy/potential change(s)
• Big batteries and small resistors (and vice
  versa)
• Ohms law Ohmic devices

13
Resistors in series

• Series?
• Current
• Equivalent resistance
• Total energy/potential change(s)
• Energy/potential changes per resistor

14
Resistors in parallel

• Parallel?
• Energy/potential changes per resistor
• Current in each resistor
• Current at a node
• Equivalent resistance

15
Parallel and series combinations
16
Batteries

• Internal resistance
• Ideal
• Real

17
Resistance in wires

• Factors affecting resistance
• Length
• Width
• Temperature
• material

18
Circuit applications

• Voltage divider
• two resistors
• potentiometer
• Current divider (shunt)

19
Meters in circuits

• Ammeters
• Voltmeters

20
Conventional current Vs. charge flow

• Electron Vs. proton flow