While operating at 120 volts an electric toaster has a resisitance of 15 ohm. What is the power?

0 ⤊

help I am lost :(

2007-05-21 08:39:16 · 4 answers · asked by Eric 1 in Science & Mathematics ➔ Physics

P = E^2/r = 120^2/15 = 960watts

2007-05-21 08:44:25 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

R = V/I so I = V/R Current = 120/15 = 8 amps

P = I x V = 8 x 120 = 960 watts

also P = (V^2)/R = (120)^2/15 = 960 watts

2007-05-21 08:53:57 · answer #2 · answered by nicolaohare 2 · 0⤊ 0⤋

The power is W=RI^2 =V^2/R= 120^2/15=960watt

2007-05-21 08:46:52 · answer #3 · answered by santmann2002 7 · 0⤊ 0⤋

120 volts,times 15 ohms, eguals 1800 watts

2007-05-21 08:49:58 · answer #4 · answered by duster 6 · 0⤊ 0⤋