Electrical Units 101

Which of the following is a semiconductor?

• Silicon

• Copper

• Iron

• Plastic

Electricity can be generated from _________.

• wind power

• sunlight

• water

• all of the above

Solar panels transform sunlight into _________.

• heat

• electricity

• motion

• sound

Fill in the blank: Atoms are categorized into elements based on their number of _______.

• Electrons

• Neutrons

• Protons

• Nuclei

The maximum number of electrons in the third shell is ____.

• A) 8

• B) 18

• C) 32

• D) 50

Fill in the blank: Materials that resist the flow of electricity are known as ________.

• Conductors

• Insulators

• Semiconductors

• Superconductors

What happens to semiconductors when they are heated?

• They become less conductive

• They become more conductive

• They remain the same

• They become insulators.

Which component of a circuit adjusts the flow of electricity?

• Source

• Path

• Load

• Control

Fill in the blank: Potential energy in a circuit is similar to _______ in a water system.

• flow

• pressure

• volume

• temperature

Fill in the blank: Voltage equals wattage divided by ____.

• Current

• Power

• Resistance

• Energy