Paying for electricity

Electricity is sold in..

• Kilowatthours

• Watthours

• Watts

• Kilovolts

What is the equation for Electrical Power?

•  $P=I\div V$  

•  $P=V\div I$  

•  $P=I\times V$  

The ability to do work or cause change:

• work

• energy

• momentum

• power

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is needed calculate power?

• work

• time

• mass

• distance

________________ is the rate at which work is done.

• Power

• Work

• Time

• Energy

What are the proper units for electrical power?

• volts

• joules

• amps

• watts

What is the power of a 20V bulb with 5A through it?

• 100W
• 100V
• 6.3W
• 6.3A

What is the current through a 11V bulb with a power of 99W?

• 9W
• 9A
• 60V
• 60A

An electric fire of power 5000W is used for 2 hours. How many kW hours of electricity has it used?

• 1.5kWh

• 2.5kWh

• 3.5kWh

• 4.5kWh

An electric fire of power 5000W is used for 2 hours. How many UNITS of electricity has it used?

• 1.5 units

• 2.5 units

• 3.5 units

• 4.5 units