simple electric circuit Flashcards
What are insulators?
Substances that do not allow current to flow through them.
Examples include plastic, wood, paper, glass, and leather.
List examples of insulators.
- Plastic
- Wood
- Paper
- Glass
- Leather
These materials have almost no free electrons.
What is the resistance level of insulators?
Very high resistance to the flow of current.
Insulators have almost no free electrons.
What are conductors?
Substances that allow current to flow through them easily.
The human body also allows current to flow through it.
List examples of conductors.
- Copper
- Aluminium
- Silver
- Iron
- Brass
- Steel
All metals are conductors.
What is the resistance level of conductors?
Very small resistance to the flow of current.
Conductors have a large number of free electrons.
What is a circuit?
The path along which current flows.
A circuit must be complete for current to flow.
What are the requirements for current to flow in a circuit?
The circuit must be complete or closed.
If the circuit is open, the current doesn’t flow.
What must each component of an electric circuit do?
- Pass current through it
- Be conducting
If there is any insulator in the path or if the circuit is broken, the circuit is incomplete.
Fill in the blank: Current flows only if the circuit is _______.
[closed]
True or False: Insulators have a large number of free electrons.
False
Insulators have almost no free electrons.
True or False: The human body is a conductor.
True
The human body allows current to flow through it.
