120V series-wired ornamental lightbulbs, Figure 1. Suppose you have a string of 48 bulbs, each one with a resistance of 8.00Ω. Assume the resistance of a bulb with its filament broken drops to zero. Suppose that a bulb becomes dangerously warm, so that it could set something on fire, if it receives a power of 1.75 W. How many bulbs can fail before the string of lights becomes dangerous
120V series-wired ornamental lightbulbs, Figure 1. Suppose you have a string of 48 bulbs, each one with a resistance of 8.00Ω. Assume the resistance of a bulb with its filament broken drops to zero. Suppose that a bulb becomes dangerously warm, so that it could set something on fire, if it receives a power of 1.75 W. How many bulbs can fail before the string of lights becomes dangerous
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120V series-wired ornamental lightbulbs, Figure 1. Suppose you have a string of 48
bulbs, each one with a resistance of 8.00Ω. Assume the resistance of a bulb with its
filament broken drops to zero. Suppose that a bulb becomes dangerously warm, so
that it could set something on fire, if it receives a power of 1.75 W. How many bulbs
can fail before the string of lights becomes dangerous?
Transcribed Image Text:Filament
Jumper
Glass insulator
Figure 1
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