problem: A flashlight lamp connected to a battery that provides 1.4 V draws a current of 0.10 A. what electric power is used by the lamp??
i need solution for this one.help me please
2007-03-23 10:39:04 · 6 answers · asked by bambini 1 in Science & Mathematics ➔ Physics
0.139 watts
2007-03-23 10:49:14 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The formula for power is P(watts)=E(volts)x I(amps)
P=1.4x.1=.14Watts Crossing to the basic Ohms Law Formula E=IR and using basic substitution of IR for E, You find that P=IxIxR is a good formula if you only have the Current and Resistance. Hope this helps.
2007-03-23 10:57:20 · answer #2 · answered by mustanger 5 · 0⤊ 0⤋
Power = volts times current
2007-03-23 10:47:24 · answer #3 · answered by Gene 7 · 0⤊ 0⤋
P = VI
P = 1.4 * 0.1
P = 0.14 watts.
2007-03-23 10:52:05 · answer #4 · answered by sparbles 5 · 0⤊ 0⤋
DITTO WITH LAST QUESTION
2007-03-23 10:56:21 · answer #5 · answered by heartsave999 2 · 0⤊ 0⤋
dunno but when u dint have electricity in the casa, it sucks!!!
2007-03-23 10:46:24 · answer #6 · answered by Mama C. 3 · 0⤊ 0⤋