1. Here are some graphics for the ohm’s law lesson. Read through the book, work out the assigned problems, and come up with a lesson plan (written on paper) for this unit. I have a box of resistors that you could pass around, and a setup where you can change resistance and voltage and watch a light bulb get dimmer or brighter. I will have already taught them about current (I = q/t)

2. V3V3 A3A3 Symbols A Cell. + and -, Infinite current, R = 0, what’s really inside +-+- A Battery of cells A resistor A voltmeter, R = infinity An ammeter, R = 0

3. Ohm’s Law V = Voltage (like pressure) I = Current (like flow rate) +-+- A R R = V I R = Resistance in ohms (  ) V = Voltage in Volts (V) (pressure) I = Current in Amps (A) (flowrate) V A = ammeter – measures current

4. Ohm’s Law – re written for current V = Voltage (like pressure) I = Current (like flow rate) R = Resistance to flow +-+- A R I = V R R = Resistance in ohms (  ) V = Voltage in Volts (V) (pressure) I = Current in Amps (A) (flowrate) V

5. Ohm’s Law +-+- A R I = V R R = Resistance in ohms (  ) V = Voltage in Volts (V) (pressure) I = Current in Amps (A) (flowrate) They don’t need to know the color code V Demo - pass around resistors (two properties - power and resistance) Demo - power supply, resistor, light bulb (show increase/decrease V, and R) Black0 Brown1 Red 2 Orange3 Yellow4 Green5 Blue6 Violet7 Gray8 White9 Gold5% Silver10% No color20%

6. Ohm’s Law +-+- A R= ?? R = V I R = Resistance in ohms (  ) V = Voltage in Volts (V) (pressure) I = Current in Amps (A) (flowrate) 12.0 V 120. mA Example 1:

7. Ohm’s Law +-+- A R= ?? R = V I R = Resistance in ohms (  ) V = Voltage in Volts (V) (pressure) I = Current in Amps (A) (flowrate) 12.0 V 120. mA Example 1:

8. Whiteboards – you need about 6 because they are so simple 11 | 2 | 3 | 4 | 5 | 623456

9. A light bulb has a resistance of 1200. Ω, and is hooked up to 240. volts. What current flows through it? 0.200 A of 200. mA Given: R = V I R = 1200 Ω V = 240 V I = ? I = V/R = 240/1200 = 0.20 A = 200. mA

10. question goes here answer goes here Given: R = V I R = V = I = Put your solution here

11. question goes here answer goes here Given: R = V I R = V = I = Put your solution here

12. question goes here answer goes here Given: R = V I R = V = I = Put your solution here

13. question goes here answer goes here Given: R = V I R = V = I = Put your solution here

14. question goes here answer goes here Given: R = V I R = V = I = Put your solution here