Power Consumption of a TV
- Author:
- Tanja Wassermair
Fermi Problem - Introduction
Try to solve the following tasks. For solving you have to make certain assumptions, simplifactions, ... The information you need can be found by estimating or just by taking the specified data.
Write down all your assumptions and your solution. You should be able to present your result to your classmates and to give further explanations about how you have solved the problems.
There is not just one correct result for this tasks. Rather, a comprehensible reasoning is important! Finally, all results are compared and evaluated in class.
Task 1
How much kWh electricity does a 19 inch (48 cm) TV need monthly, if it is turned on for 3 hours per day?
The following data for the power consumtions can be found on the this website: https://www.stromverbrauchinfo.de/stromverbrauch-tv-geraete.php. The data are for 19 inch TV-sets (different brands).
Power Consumptions of 19 inch TVs
Task 2
What are the costs for your calculated power consumption? You can use the tariff for electricity "SMART TIME day & night" by the Energie AG for your calculation.
Task 3
Try to find out how much energy an AA battery provides.
How many AA batteries would you need in one month for your TV?
