Watts

You move an 8-newton weight five meters in 4 seconds. How much power have you generated?

• 160 watts

• 10 watts

• 6.4 watts

• 17 watts

Work divided by time equals...

• energy

• power

The unit of power is the...

• work

• watt

What is the definition of watts?

• Watts is a unit of energy.

• Watts is a unit of distance.

• Watts is a unit of temperature.

• Watts is a unit of power.

Tags

NGSS.MS-PS3-5

How do you calculate power in watts?

• Power (P) = Voltage (V) - Current (I)

• Power (P) = Voltage (V) / Current (I)

• Power (P) = Voltage (V) + Current (I)

• Power (P) = Voltage (V) x Current (I)

Tags

NGSS.MS-PS3-5

If a device uses 500 watts of power and runs for 2 hours, how much energy does it consume?

• 1000 watt-hours or 1 kilowatt-hour (kWh)

• 2 kilowatt-hours

• 1500 watt-hours

• 250 watt-hours

What is the formula to calculate power in watts?

• P = V + I

• P = V / I

• P = V - I

• P = V * I

Name a common household appliance that typically uses 1000 watts.

• microwave oven

• hairdryer

• blender

• toaster

Explain the concept of wattage in relation to energy consumption.

• Wattage is the speed at which electricity flows through a device.

• Wattage is the number of times an electrical device can be turned on and off.

• Wattage is the amount of power consumed by an electrical device in one hour.

• Wattage is the color of the light emitted by an electrical device.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If a light bulb consumes 60 watts of power, how much energy does it consume in 5 hours?

• 200 watt-hours

• 250 watt-hours

• 360 watt-hours

• 300 watt-hours