1. LG: to understand the basics of potential difference
Potential Difference: (Voltage) the difference in electric potential energy at two different points in the circuit
-measured in Volts (V)
LG: to understand the basics of potential difference

2. LG: to understand the basics of potential difference
Waterfall Analogy
LG: to understand the basics of potential difference

3. LG: to understand the basics of potential difference
Waterfall Analogy
-at the top water has high potential energy
-at the bottom water has low potential energy
-the energy turns the waterwheel
LG: to understand the basics of potential difference

4. LG: to understand the basics of potential difference
Waterfall Analogy
-at the top water has high potential energy
-at the bottom water has low potential energy
-the energy turns the waterwheel
-before entering a load, electron has high potential energy
-after leaving a load, electron has low potential energy
-the energy is turned into another form
LG: to understand the basics of potential difference

5. LG: to understand the basics of potential difference
Voltmeter: compares potential energy before and after a load (or source)
-has to be placed in parallel with the load
LG: to understand the basics of potential difference

6. LG: to understand the basics of potential difference
What's the potential difference in the following situations?
LG: to understand the basics of potential difference

7. LG: to understand the basics of potential difference
What's the potential difference in the following situations?
1.5 V V
LG: to understand the basics of potential difference