The Christmas tree garland consists of 40 light bulbs connected in series and powered by a 220 V electrical network. After one light bulb burned out, the remaining 39 were connected in series again and connected to the network. Was the garland brighter with 40 or 39 bulbs? Explain the answer.
The garland shines brighter with 39 light bulbs, the power is inversely proportional to the resistance at the same voltage, and the resistance in series connection is directly proportional to the number of connected elements.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.