1. Rank the substances in order of their index of refraction Substance A Substance B Substance C Substance A Substance D Substance E Substance B

2. Substance A Substance C Substance D Substance A Rank the substances in order of their index of refraction

3. Light bulb 1 has a voltage of 15 V and the battery is a 39 V battery. The current through light bulb 3 is 3 amps and light bulb 1 has a resistance of 1 ohm. 1.What is the voltage of light bulb 2? 2.What is the voltage of light bulb 3? 3.What is the resistance of light bulb 3? 4.What is the current through light bulb 1? 5.What is the current through light bulb 2? 6.What is the resistance of light bulb 2?

4. Light bulb 2 has a current of 4 amps and light bulb 3 has a current of 5 amps. The battery has a voltage of 38 V and light bulb 1 has a resistance of 2 ohms. 1.What is the current through light bulb 1? 2.What is the voltage of light bulb 1? 3.What is the voltage of light bulb 2? 4.What is the voltage of light bulb 3? 5.What is the resistance of light bulb 3? 6.What is the resistance of light bulb 2?

5. Light bulbs 1, 3, and 5 each have a resistance of 3 ohms. Light bulbs 2 and 4 each have a resistance of 6 ohms. The battery voltage is 24 V in each of the three circuits. 1.Which circuit will have the greatest current by the battery? What is that current? 2.Rank the bulbs in order of the number of joules they take from each coulomb. 3.Rank the bulbs in order of the amount of current they receive. 4.Rank the bulbs in order of their brightness.

6. The light bulb has a resistance of 4 ohms. 1. How many joules does each coulomb have at point A? 2. How many joules does each coulomb have at point B? 3. How many coulombs pass by point A each second? 4. How many coulombs pass by point B each second? 5. The light bulb is replaced with a new light bulb. Now 1 coulomb passes by point B each second. How many coulombs will pass by point A per second?

7. Each bulb has a resistance of 2 ohms and the battery has a voltage of 12 V 1. How many joules does each coulomb have at point A? 2. How many joules does each coulomb have at point B? 3. How many joules does each coulomb have at point C? 4. How many joules does each light bulb take from each coulomb? 5. How many coulombs pass by point A each second?

8. 1. If light bulb 1 has a larger resistance than light bulb 2, then which of the following statements is FALSE? a. Each light bulb takes the same amount of joules from each coulomb. b. Each light bulb has the same current flowing through it. c. The number of coulombs that pass by points A, B and C per second are the same. d. The voltage of light bulb 1 is greater than the voltage of light bulb 2. 2. Using the same circuit, if light bulb 1 has a larger resistance than light bulb 2, then which of the following statements is TRUE? a. Light bulb 2 will be brighter than light bulb 1. b. Light bulb 1 will have fewer amps than light bulb 2. c. The coulombs per second will be the same for both light bulbs so the power is the same also. d. Light bulb 1 will take more joules from every coulomb.

9. 3. If light bulbs 1 and 2 have the same resistance, then which of the following statements is FALSE? a. Each light bulb takes the same amount of joules from each coulomb. b. Each light bulb has the same current flowing through it. c. The amount of current at points A, B and C are the same. d. The amount of joules in each coulomb at point A, B and C are the same. 4. Using the same circuit, this time if light bulb 1 has twice the resistance than light bulb 2, which of the following statements is TRUE? a. The light bulb with the greater resistance will take more joules from every coulomb. b. Point C will two times the current than point B. c. Point C will have half the current as point B. d. Point A will have twice the current as point C.

10. Light bulb 1 has a resistance of 15 ohms and light bulb 2 has a resistance of 30 ohms. The battery has a voltage of 18 volts. a) How many coulombs per second are passing point A? b) How many coulombs per second are passing point B? c) How many coulombs per second are passing point C? d) How many joules does light bulb 1 take from each coulomb? e) How many joules does light bulb 2 take from each coulomb? f) How many joules do the coulombs at the following points have? A: B: C: g) How much power does each light bulb use?

11. The battery has a voltage of 9 volts, light bulb 1 has a resistance of 10 ohms and light bulb 2 has a resistance of 30 ohms. a) How many joules does each light bulb take from each passing coulomb? b) How many amps are passing through the following points? A: B: C: D: E: F: G: c) How much power does each light bulb use?

12. Every second 4.5 coulombs pass through light bulb 1 and every second 1.5 coulombs pass through light bulb 2. The voltage of the battery is 18 volts. a) How many joules does light bulb 1 take from each coulomb? b) How many joules does light bulb 2 take from each coulomb? c) What is the resistance of light bulb 1? d) What is the resistance of light bulb 2? e) How many coulombs pass through points A, B and C every second?

13. The battery has a voltage of 9 volts, light bulb 1 has a resistance of 30 ohms, light bulb 2 has a resistance of 15 ohms and light bulb 3 has a resistance of 45 ohms. a) How many joules does each light bulb take from each passing coulomb? Light bulb 1: Light bulb 2: Light bulb 3: b) How many amps are passing through the following points? B: D: F: c) How many joules do the coulombs have at the following points? C: D: E:

14. The battery has a voltage of 15 volts, light bulb 1 has a resistance of 4 ohms and light bulb 2 has a resistance of 1.2 ohms. The current at point c is 3 amps. a) How many joules does each light bulb take from each passing coulomb? Light bulb 1: Light bulb 2: Light bulb 3: b) How many amps are passing through the following points? A: B: D: E: F: c) How many joules do the coulombs have at the following points? C: D: E: d) What is the resistance of light bulb 3?

15. Light bulb 1 takes 20 joules from each coulomb. Light bulb 3’s resistance is 12 ohms. The current at point c is 4 c/s and the current at point a is 1 c/s. a) Find the current and the number of joules per coulomb at each of the lettered points. b) Find the resistance of each bulb. c) What is the voltage of the battery?