In National Lampoon’s Christmas Vacation”, Clark Griswold is quoted as saying “250 strands of lights, 100 individual bulbs per strand for a grand total of 25,000 imported Italian twinkle lights!" Calculate the power usage and cost to run the lights for the holiday season. Use a 100-count string of incandescent mini lights runs at 40 watts. Multiply by 5 hours a day to find kwh/day. Multiply by 30 days to find kwh/season. (from Thanksgiving weekend through Christmas Eve.) Multiply by 2.8 cents, or your cost of power usage found on your electric bill, to calculate cost in San Antonio this season. (One of the lowest in most states in our Nation!) (Reminder: If the homeowner uses incandescent bulbs they'd have to run six separate strings that each use separate outlet plugs.)
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
In National Lampoon’s Christmas Vacation”, Clark Griswold is quoted as saying “250 strands of lights, 100 individual bulbs per strand for a grand total of 25,000 imported Italian twinkle lights!" Calculate the power usage and cost to run the lights for the holiday season.
Use a 100-count string of incandescent mini lights runs at 40 watts.
- Multiply by 5 hours a day to find kwh/day.
- Multiply by 30 days to find kwh/season. (from Thanksgiving weekend through Christmas Eve.)
Multiply by 2.8 cents, or your cost of power usage found on your electric bill, to calculate cost in San Antonio this season. (One of the lowest in most states in our Nation!)
(Reminder: If the homeowner uses incandescent bulbs they'd have to run six separate strings that each use separate outlet plugs.)
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