State the resistance of 220 V – 100 W bulb
WBBSE
Class X
Physical Science
Current Electricity
01 Mark
2025
Power (P) = \text{V}^2 \over \text{R}
Resistance (R) = \text{V}^2 \over \text{P}
= 220^2 \over 100
= 48400 \over 100 = 484 Ω
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