What charge does a proton have?

• Positive

• Negative

• Neutral

• No charge

What type of materials are usually considered good conductors?

• Materials with fewer than four electrons in the valence shell

• Materials with more than four electrons in the valence shell

• Materials with no electrons in the valence shell

• Materials with equal electrons and protons

What are materials with many free electrons known as?

• Insulators

• Conductors

• Semiconductors

• Resistors

What is the basis for an alternating current electrical system?

• A rotating magnet

• A stationary magnet

• A rotating conductor

• A stationary conductor

What is the effect of voltage on the size of insulators?

• Increases the size

• Decreases the size

• Has no effect

• Reduces the need for insulators

What did Ampere demonstrate about electric currents?

• They produce sound waves

• They produce magnetic fields

• They produce light

• They produce heat

What is the unit of resistance?

• Amp

• Volt

• Ohm

• Coulomb

What happens when resistance is high in a conductor?

• Current flow is easier

• Current flow is harder

• Current flow is unchanged

• Current flow is stopped

What do watt-hour meters measure?

• Temperature

• Speed

• Volts and amps over time

• Pressure