How much current will these appliances draw from a 120 v circuit?

Question

1) 1200 w stream iron
2) a 600 w, two-cup coffee maker
3) a 60 w stereo
4) a 40 w lamp

Answer 1

10
5
0.5
0.33

Watts= Volts X Amps.
So amps = Watts/ Volt
1200W/120 Volts = 10Amps.

Answer 2

10 Amperes
5 Amperes
.5 Amperes
.3 Amperes.

You need to note though, that a stereo usually rates its power in output power to the speakers, and rarely does that power ever reach peak. While the stereo might be rated at 60 Watts, the input current will not likely reach 60 watts very often, even though the stereo is not likely to be 100% efficient.

Too, the steam iron is a thermostatically controlled device, and may reach 1200 W. when the heating element is active. It will be far less when the element is off.

The Two -Cup coffee maker will also use a greater amount of current when actually heating coffee or keeping it warm. Many of these have thermostats as well.

The only device which will consistently draw current while powered up is the 40 W. lamp, which is purely resistive and has no dynamic sort of control.

Answer 3

current = amps
amps = watts/ volts

1=10 a
2= 5
3= .5 a...1/2 amp
4= .05.........5 one hundredth's
5= .033 a 3 one hundredth's

Answer 4

-Divide 110 into the watts i;e 110into1200=10 amps

Answer 5

You know the power equation, right? P = V * I? You have V, and you have I...