Electricity Power

What is electricity?

• an object that electrons do not flow through

• energy created by moving charged particles

• when two objects repel each other

• a circuit that has only one path for electricity to flow

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Which of the following is an insulator?

• an eraser

• a wire

• a penny

• a metal spoon

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Which of the following is a conductor?

• wood

• rubber

• metal

• plastic

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A particle that carries a negative electric charge is called a(n) ______.

• neutron
• atom
• proton
• electron

kWh stand for

• kilowestohm

• kilometwer

• kilowatt hour

kilowatt hour is equa to

• 1000W for 3600s

• 1500W for 3600s

• 1000W for 3000s

• 500W for 10s

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

In energy transformations, "wasted energy" usually takes what form?

• heat
• chemical energy
• light
• sound waves

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What is the unit of power?

• Ohms

• Volts
• Amps
• Watts

What is voltage?

• The flow of protons

• The number of charged particles that pass each second
• The difference in potential energy of charged particles
• The rate at which energy is being transformed