Grade 9 Electricity Unit Flashcards
(27 cards)
What is a circuit?
A path in which electrons flow
What is a circuit diagram?
A diagram of a circuit including the Standard symbols this is most commonly drawn out
What is a circuit symbol?
The symbols used in a circuit diagram to represent certain objects
What is a conductor?
A material that allows electrons to pass through it
What is current electricity
The controlled flow of electrons through a conductor
What is electricity generating?
Electricity being generated through a renewable or non renewable resource
What is an electron?
A negatively charged particle in the atom
What is an insulator
A material that prohibits the flow of electrons
What is a kilowatt hour
The unit of measure for electrical energy usage
What is an ammeter?
A device used to measure electric current
What is lightning?
A discharge of static electricity
What is a load?
part of a circuit that uses the electrical energy to create other forms of electricity
What is ohms law?
Straight line relationship between voltage and current(R=V\I
What is a parallel circuit.
When there are two or more paths for electrons to travel
What is a resistor
a device that reduces the flow of electric current
What is a series circuit
A circuit in which there is only one path for electrons to flow
What is static electricity?
An imbalance of electric charge in an object
What is voltage?
Electrical potential difference
Voltmeter?
A device used to measure PD
How can a comb become charged?
If your hair Carries a charge and the comb is neutral, the come will contract a charge
What is charging by induction?
When a charged object is brought close to a neutral object
What would happen if two - charged objects were brought close to eachother?
They would repel
What device can you use to identify whether a static charge is present?
A metal leaf meter
What is AC
Alternating current, the current moves back and forth alternating direction
