Power Calculations in Physics Quiz

If a machine does 1000 Joules of work in 5 seconds, what is its power output?

• 200 Watts

• 5000 Watts

• 50 Watts

• 100 Watts

How much power is used if a force of 20 Newtons moves an object 10 meters in 5 seconds?

• 40 Watts

• 4 Watts

• 400 Watts

• 20 Watts

What is the power output of a lightbulb that uses 300 Joules of energy in 60 seconds?

• 5 Watts

• 360 Watts

• 60 Watts

• 300 Watts

If an electric motor uses 1500 Watts of power, how much work does it do in 10 seconds?

• 150 Joules

• 15000 Joules

• 15 Joules

• 1500 Joules

How long does it take for a 100 Watt light bulb to use 1200 Joules of energy?

• 12 seconds

• 120 seconds

• 10 seconds

• 1.2 seconds

If a car engine delivers 3000 Watts of power, how much work does it perform in 3 minutes?

• 540000 Joules

• 90000 Joules

• 180000 Joules

• 60000 Joules

Tags

NGSS.HS-PS3-1