At the high end of the household circuit, the voltage sometimes drops to 198v. What is the actual power of a "200v100w" bulb working at this voltage

At the high end of the household circuit, the voltage sometimes drops to 198v. What is the actual power of a "200v100w" bulb working at this voltage


It's a "220 V 100 W" bulb. The resistance of the bulb can be calculated as 484 Ω. The actual power = the square of the actual voltage △ resistance = 81 W



A 220 V / 100 W bulb with a rated current of___ A resistance is___ Ohm