Eight holiday lights are connected in series as shown in Fig. 5.83. 

a. If the set is connected to a 120-V source, what is the current through the bulbs if each bulb has an internal resistance of 28 ^{1/ 8} Ω ?

b. Determine the power delivered to each bulb.

c. Calculate the voltage drop across each bulb. 

d. If one bulb burns out (that is, the filament opens), what is the effect on the remaining bulbs?

 

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| 次头 FIG. 5.83 Problem 13. | 次头 FIG. 5.83 Problem 13.