2007-02-20 00:03:21 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Anything which produces or uses power can be rated in watts. The watt is the derived unit of power, equal to one joule per second. A human climbing a flight of stairs is doing work at the rate of about 200 watts; a highly trained athlete can work at up to approximately 2000 watts for brief periods. An automobile engine produces 25 000 watts (approximately 30 horsepower) while cruising. A typical household incandescent light bulb uses 40 to 100 watts.
In electrical terms, it follows that:
1W = 1V * 1A
That is, if 1 volt of potential difference is applied to a resistive load, and a current of 1 ampere flows, then 1 watt of power is dissipated.
A loudspeaker is an electromechanical transducer which converts an electrical signal into sound. The watt rating on the speaker is the amount of power (or electric current) which it can handle without overloading and being damaged.
2007-02-20 01:06:13 · answer #1 · answered by Chris C 1 · 1⤊ 0⤋
Because watts are the standard unit of power.
2007-02-20 00:13:00 · answer #2 · answered by Gnomon 6 · 0⤊ 0⤋
That is one of the standards ,but would u prefer dBm . if it were 10 watts how many dBm would it be. Well it would be 40 dBm. how u like that.
2007-02-20 07:24:33 · answer #3 · answered by JOHNNIE B 7 · 0⤊ 0⤋
because the louder it is, the more people say
"Watt, Watt... I can't head you over this loud speaker, watt... watt did you say....???"
2007-02-20 00:06:35 · answer #4 · answered by J-Rod on the Radio 4 · 0⤊ 0⤋