Answer / amit

Technically, it is not possible to light an electric bulb without drawing input greater than zero watts. Zero watts is actually not zero, but refers to the minimum wattage. The inaccurate electric meters of the early days could not measure such a negligible amount of consumption as during those days, the watt hour meter had a rotating disc and when all the other lights were switched off, the disc would have only minimum rotation, which would not record even a 10W consumption. This led to the origin of the term 'zero-watt', though it is incorrect. Nowadays, electric meters can record even electricity used as indicators in switches

Answer / bb

amit kar. You are correct But here is something to consider The indicator did
not move when the load was only 15 watts then you can why not get an LED BULB
That is equivalent to 60w Incandescent bulb they only use 8W that you could put a dimmer switch on it
In theory then you could run a proper room light for free

Answer / a.chandra mohan

5 watts only

Answer / prabhu

its 12 Watts bulb sold as zero Watt bulb

Answer / mallesh

10 watts

Answer / javad

it is less than 5 watt

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