How much energy does a 100w light bulb use in a second?

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How much energy does a 100w light bulb use in a second?

2007-04-12 03:19:16 · 3 answers · asked by bombshellbeuaty 2 in Science & Mathematics ➔ Physics

3 answers

Power = energy/time

Watt=Jouls/sec

So energy = 100W (1sec) = 100 Joules

2007-04-12 03:25:26 · answer #1 · answered by Edward 7 · 1⤊ 0⤋

A 100 watt light bulb uses 100 watts in 1 hour
there are 60 x 60 seconds in an hour.
so divide 100 by 3600 to get the number of watts the bulb will use in 1 second.
(0.0278 watts to 4 d.p.)

2007-04-12 10:24:34 · answer #2 · answered by Robert S 2 · 0⤊ 1⤋

100 Joules

2007-04-12 10:22:07 · answer #3 · answered by Daniel 3 · 1⤊ 0⤋