SUMMARY
When two bulbs rated at 25 watts and 100 watts are connected in series to a 440-volt supply, the bulb that will fuse first is determined by calculating their resistances. The formula P=I²R is used to analyze the current through each bulb. The bulb with the lower power rating, in this case, the 25-watt bulb, will fuse first due to exceeding its power rating when subjected to the total voltage.
PREREQUISITES
- Understanding of electrical power calculations using P=I²R
- Knowledge of series circuits and voltage distribution
- Familiarity with the concept of power ratings in electrical components
- Basic skills in calculating resistance from power and voltage
NEXT STEPS
- Study the principles of series and parallel circuits in electrical engineering
- Learn how to calculate resistance using Ohm's Law
- Explore the effects of voltage on electrical components
- Investigate the safety measures for working with high-voltage electrical systems
USEFUL FOR
Electrical engineering students, hobbyists working with circuits, and anyone interested in understanding the behavior of electrical components under varying voltage conditions.
