Q

If the power consumed by a bulb is 60 W and the voltage across it is 120 V, what is the resistance of the bulb?

RRB Group D 13 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: D 240 Ω
Using P = V²/R, the resistance is R = 120²/60 = 240 Ω.
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