 No cheating…………….. 1500 Watts 1440Watts 1200 Watts 1100 Watts 300 Watts.

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Presentation transcript:

 No cheating……………..

1500 Watts 1440Watts 1200 Watts 1100 Watts 300 Watts

&

The typical American household receives 120 Volts of electricity from the grid Household circuits can carry a maximum of 15 Amps of current What happens when there is too much current moving through the wires?? TYPICAL HOUSEHOLD CIRCUIT: (Review)

 The house receives constant voltage (120 V)  Resistance transfers the electron’s KE to:  Light and Heat energy  Power (in Watts) is needed to “push” electrons through the resistance

 If too much current is drawn into a circuit, wires get hot  fuse blows to prevent further damage  Equations:  Power = energy per second  Power = current * voltage

3 Watts 100 Watts 1200 Watts 1440 Watts Total Power?? = Plug in your values into using V=120 Volts. Does the Amperage exceed 15 A?? Practice:

Ex) Blender = 800 Watts Lamp = 120 Watts Coffee Maker = 600 Watts Power = = 1520 Watts Current = 1520 Watts / 120 V = Amps  Find an outlet in a room of your house with a few appliances plugged into it  Write down each appliance’s power (Watts) and add them together  Find out how much current is drawn from that outlet: