Does turning up the volume of a TV set consume more power?

Question

It's for my school project. I need answers that are scientifically correct and can be verified, not just opinions. Thank you!

Answer 1

Yes, of course it does. It takes electrical energy to move those speakers back and forth. The more they move, the more energy they consume. If you want to find out how much more, you'll have to hook up the set to an ammeter to see. I'm not going to "scientifically" do it for you. I am not near a workbench, and I'm not about to set up a scientific analysis just for your project. You'll just have to take my word for it. Oh, if you want to get an idea of how much power it takes to move speakers, just take a 1500 watt stereo and turn it up loud at night and watch the lights dim during the bass notes and kick drum passages. You don't get all that sound without power.

Answer 2

as far as consuming more electricity from the home no. As far as consuming more electricity from the power supplyin the tv yea. When you plus a set into the wall it takes power (usually ac) and sends it through a transforming device to make it a useable smaller voltage and over to DC. When your set is on if you were to connect a useage meter to the line you will see constant usage. The electronic componants in a tv that control sound are so small and consume the same amout of power from the wall loud or soft and is controled by a resistive control device. The amout of current drawn from the wall does not increase or decrease. I like to use air hoses to explain. Turn on an air pump set the pump to 30 psi now pump air into a tire with a hole in it.The incoming air represents your wall power. now make the hole smaller or bigger. What is the pump pumping?? well its still pumping 30 psi right. The varriable hole in the tire represents the volume control on your tv. Where does the extra unused power go? its disipated as heat same as the extra air would. out into the air again. Does a toaster use less power toasting one slice instead of two.. no that side of the toaster the power is wasted and disapated as heat. I hope this explains it as simply as possible. Given enough time and some radio shack parts a watt meter a light bulb and a dimmer control I could prove it. The bulb will still draw what ever wattage rating the bulb is no matter what position the dimmer. As you dim the light the dimmer control will get warmer and warmer thus displacing the unused left over power as heat. This is why the old tube tvs were so dam power inefficent. Most of the power was disapated as heat.

Answer 3

yes, it does

A typical speaker system in a TV is about 10-20 Watts (maximum).
If you have the speakers off you consume 0 energy on audio.
if you have the speakers all way up, you consume 10 (or 20) more watts.

The priciple of preservation of energy says that for anything you want to do (in this case, increase the volume) you need to spend energy somewhere else (in this case electric power)

Answer 4

Contact the power company!They'll likely have this information!=)

Answer 5

Contact your local power company.... They'll most likely have this information.