A zero watt Lamp consumes

• A. About 15 to 20 W power
• B. About 25 to 30 W  Power
• C. No power
• D. About 5 to 7 W power

Answer: (D)

Zero watt Night Lamp is Low incident light bulb this bulb requires very low current i.e around (0.023 A) and the power consumption is also very low 3 – 7 W.
In earlier days the analog electric energy meter was not very efficient to sense or measure zero watt bulb, therefore the meter uses to show zero or no consumption.