Electricity Basics

What we call electricity is actually the flow of ____________ through materials to power our devices.

• protons

• neutrons

• electrons

• voltons

Materials that allow electricity to flow easily through them are called _____________________.

• insulators

• conductors

• magnetors

• electors

The law of electricity that says that voltage is equal to current times resistance was proposed by ________________.

• Andre Marie Ampere

• Nikola Tesla

• Thomas Edison

• Georg Simon Ohm

Which of the following is NOT an expression for Power?

• Energy divided by time

• Current x resistance

• Current times voltage

• Voltage squared divided by resistance

Which of the following is NOT a good insulator?

• plastic

• rubber

• wood

• copper

Materials that DO NOT allow electricity to easily flow through them are ___________________.

• insulators

• inhibitors

• conductors

• engineers

Which of the following is NOT a good conductor of electricity?

• silver

• copper

• rubber

• gold

The electric force that makes electricity run through wire is _________________.

• resistance (R)

• amperes (A)

• voltage (V)

• power (P)

The steady flow of electrons through a wire is measured in _______________________.

• amperes (A)

• voltage (V)

• power (P)

• resistance (R)

Power is measured in units of ______________________.

• ohms

• volts

• amps

• Watts