1. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance?

2. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance? but requires a value for R

3. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance? but requires a value for R I rms =60W/120v = 0.5 A

4. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance? but requires a value for R I rms =60W/120v = 0.5 A whileso

5. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance? but requires a value for R I rms =60W/120v = 0.5 A whileso In fact, notice the peak voltage

6. A lamp with a 60W bulb is plugged into a 120v outlet. a)What are the rms and peak currents through the lamp? b)What is the bulb’s resistance? but requires a value for R I rms =60W/120v = 0.5 A whileso In fact, notice the peak voltage now 60W = (0.5 A) 2 R R = 240 

7. Several minutes after being switched on, which of the above light bulbs will be noticeably brighter? 1) A 2) B 3) both the same

8. When plugged into an active household outlet, which of the light bulbs above will be brighter? 1) A 2) B 3) both the same