The 100-bulb strand of incandescent Christmas lights is rated at 40.8W of power. When stacked, two strands consume twice the power (81.6W =2 x 40.8W) and act as two resistors in parallel to a 120V source. If the 120V source is safe guarded by a 15A circuit breaker, and the 15A circuit breaker will actually "trip" (open up) at 80% its rating (which is often the case in the real world!), how many strands can be run at the same time without tripping the circuit breaker? If you use 100-bulb strands of LED Christmas lights instead, how many strands can you run at the same time? Assume LEDs run at 1/10th the power of incandescent bulbs.

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter21: Current And Direct Current Circuits
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The 100-bulb strand of incandescent Christmas lights is rated at 40.8W of power. When stacked, two strands consume twice the power (81.6W =2 x 40.8W) and act as two resistors in parallel to a 120V source. If the 120V source is safe guarded by a 15A circuit breaker, and the 15A circuit breaker will actually "trip" (open up) at 80% its rating (which is often the case in the real world!), how many strands can be run at the same time without tripping the circuit breaker? If you use 100-bulb strands of LED Christmas lights instead, how many strands can you run at the same time? Assume LEDs run at 1/10th the power of incandescent bulbs. 

The 100-bulb strand of incandescent Christmas lights is rated at 40.8W of power. When stacked, two strands consume twice the power (81.6W =2 x 40.8W) and act as two resistors in
parallel to a 120V source. If the 120V source is safe guarded by a 15A circuit breaker, and the 15A circuit breaker will actually "trip" (open up) at 80% its rating (which is often the case
✓ If you use 100-bulb strands of LED Christmas lights
in the real world!), how many strands can be run at the same time without tripping the circuit breaker? [Select]
instead, how many strands can you run at the same time? Assume LEDs run at 1/10th the power of incandescent bulbs.
100
Indoor Outdoor
InteriorAl Aire Libre
CLEAR-MINI
Light String
Cadena de luz
20 ft
Celebrations
[Select]
Transcribed Image Text:The 100-bulb strand of incandescent Christmas lights is rated at 40.8W of power. When stacked, two strands consume twice the power (81.6W =2 x 40.8W) and act as two resistors in parallel to a 120V source. If the 120V source is safe guarded by a 15A circuit breaker, and the 15A circuit breaker will actually "trip" (open up) at 80% its rating (which is often the case ✓ If you use 100-bulb strands of LED Christmas lights in the real world!), how many strands can be run at the same time without tripping the circuit breaker? [Select] instead, how many strands can you run at the same time? Assume LEDs run at 1/10th the power of incandescent bulbs. 100 Indoor Outdoor InteriorAl Aire Libre CLEAR-MINI Light String Cadena de luz 20 ft Celebrations [Select]
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