Less than what, exactly? You should really clarify with what you are comparing.
paraguay
In general an LED consumes less energy than a Plasma.
3/4 hp of course consumes less electricty
Yes. Almost every electronic device consumes energy, however small. However the power draw of a voltage regulator is extremely tiny, typically less than 1mA. As such, they usually save more power than they consume.
Saving energy means you use less energy from the company that supplies your electricity. Hence your bill will be less. You are charged in Watt Hours. If you turn on an incandescent 100 Watt bulb for an hour the electric company will charge you about 12 cents. If you use an LED bulb which gives the same light and only consumes 20 Watts, it only costs about 2.4 cents per hour.
A negative energy balance. This means that you consume less energy than your body consumes during a certain time span.
Gas uses less engery.
Consumes less energy that the equivalent incandescent light source.
it works on heating principle , when we want more speed indecreases its resistance and when we want less speed it increases itresistance to the flow of electric current and get itself heated
the short answer is yes. However - that is so much as almost everything we do has an impact. The argument for electric cars is that they harm the environment less than traditional petrol, diesel and gas cars. The energy required by an electric car comes from the electricity grid. If the grid is using wind, solar etc then the car would be completely "clean". However all electricity grids still have some coal fired power stations. So the energy you consume to drive an electric car will still produce CO2 at the coal station. However: It is believed/assumed that the large coal station is much more efficient than the thousands of little petrol motors in cars. So will produce less pollution. An electric car is typically lighter weight so consumes less energy to get around. An electric car needs less maintenance - so consume less energy to be serviced. So while they still "harm the environment" they are/should be considerably less harmful. Ideally the less harm you could do to the environment: 1 - stay home - uses no energy 2 - cycle (energy only required to build/maintain the cycle and roads) 3 - public transport on electric buses, trains, trams. 4 - public transport on petrol based buses etc 4 - electric cars 5 - traditional cars 6 - unserviced traditional cars Not sure which order for 4? Would a bus with 50 passengers cause less pollution than 50 electric cars? Not sure
it consumes less energy than ordinary bulbs do.thus it conserves electricity and reduces the chances of loadshedding.
No it is a button, it will take some of your energy to push it however, less than it took to write this answer though