Electricity Fundamentals Flashcard

Front

What is the scientific definition of electricity?

Back

A flow of electrons under pressure through something that offers resistance.

Front

In the analogy comparing electricity to water flow, what does the flow in water correspond to in electricity?

Back

Amperes (amps)

Front

Which of the following best defines resistance in electricity? Options: The energy per second supplied by the current., Any tendency of a matter to prevent electrical flow., A material that allows electricity to flow easily., A device that converts electrical energy to light.

Back

Any tendency of a matter to prevent electrical flow.

Front

Which of the following materials is a good conductor of electricity? Rubber, Vinyl, Silver, Air

Back

Silver

Front

What is the role of an insulator in an electrical circuit?

Back

To provide great resistance to the flow of electricity.

Front

Which of the following best describes electric power? Options: The energy per second supplied by the current., The resistance to electrical flow., The flow of electrons under pressure., The material that conducts electricity.

Back

The energy per second supplied by the current.

Front

Why does the filament in a bulb glow without burning out?

Back

It is a special metal element in a vacuum tube.

Front

Which unit is used to measure the pressure that causes current to flow in a circuit?

Back

Volt

Front

What does the unit "ampere" (amps) measure?

Back

The amount of current flowing through a wire or motor

Front

How many watts are in one kilowatt?

Back

1000