+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
What is an electric charge?
|
An electrical property of matter that creates a force between objects
|
|
What are the two types of electric charge?
|
Positive and negative
|
|
Describe the interaction between two like charges and between two opposite charges.
|
Like- repel, opposites- attract
|
|
What does electric force depend on?
|
Charge and distance
|
|
What is an electric field?
|
The region around a charged object in which other charged objects experience an electric force
|
|
Explain how a potential difference produces a current in a conductor.
|
A charge moves from one place to anpther in an electric field
|
|
Define resistance.
|
The ratio of voltage across a conductor to the current one it carries
|
|
How do you calculate resistance?
|
Dividing the voltage across the conductor
|
|
Distinguish between conductors, superconductors, semiconductors and insulators.
|
Conductors- transfer charge easily, insulator- opposite, semiconductors- properties between insulators and conductors, superconductors- zero resistance after the temp reaches its critical temp
|
|
What is an electrical circuit?
|
An electrical device connected so that it provides one or more complete paths for the movement of charges.
|
|
What is the difference between an open circuit and a closed circuit?
|
Open- no charge flows and no current, closed- closed loop path for the electrons to follow.
|
|
What is the difference between a series circuit and a parallel circuit?
|
Series- a circuit or portion of a circuit that provides a single conducting path. parallel- components in a circuit that are connected across common points, two or more separate conducting paths
|
|
What is electric power?
|
The rate at which electrical work is done
|
|
Ho w do you calculate electrical power?
|
Power= amps x voltage
|
|
How do electrical companies measure energy consumption?
|
Kilowatt hours
|
