STAAR Prep: Circuits Flashcards
(15 cards)
What is the source of power in an electrical circuit?
battery
A battery provides the necessary voltage for current to flow.
Define a circuit.
a complete circular path around which electricity can flow
Circuits are essential for the operation of electrical devices.
What is a closed circuit?
a circuit that is complete; allows electricity to flow
Closed circuits are necessary for powering devices.
What does conductivity refer to?
the ability of a material to allow electrical energy to pass through
High conductivity materials are typically metals.
What is a conductor?
a material that allows electrical energy to pass through
Examples include copper and aluminum.
Define current in the context of electricity.
the flow of electricity through a conductor
Current is measured in amperes (A).
What is the function of a fuse?
a device that shuts off power to an electrical circuit when there is too much current
Fuses protect circuits from overloads.
What is electrical energy?
energy that is absorbed or delivered by an electric circuit
It is used to power devices and perform work.
What is the definition of energy?
the ability to do work and cause change
Energy can exist in various forms, including electrical, thermal, and kinetic.
What is an insulator?
a material that slows or stops the flow of electrical energy
Common insulators include rubber and glass.
What is an open circuit?
a circuit that is incomplete; does not allow electricity to flow
Open circuits prevent devices from functioning.
Define a parallel circuit.
circuit with two or more paths
Parallel circuits allow multiple devices to operate independently.
What is a series circuit?
circuit with one path
In series circuits, all components share the same current.
Fill in the blank: A _______ circuit does not allow electricity to flow.
open circuit
This type of circuit can occur due to a break in the path.
True or False: A closed circuit allows electricity to flow.
True
Closed circuits are essential for the operation of electrical appliances.
