Electricity Flashcards
What are the 3 types of particles that make up an atom?
Protons (with a positive charge)
Electrons (with a negative charge)
Neutrons (with no charge)
How is electricity start?
When charged particles move.
What is a conductor?
Material through which electrons can flow easily.
Give 2 examples of conductors.
Metals and graphite
What is an insulator?
Material through which electrons struggle to flow through.
Give 3 examples of insulators.
Rubber, plastic, glass
What is an electric current?
Flow of charge.
How is the flow of charge created?
By the movement of electrons in the circuit.
The circuit must be open/closed in order for electrons to flow.
Closed.
What is a series circuit?
Circuit with a single loop.
If 1 component breaks, the whole circuit is broken.
Individual lamps can/cannot be switched on in a series circuit.
Cannot.
What is a parallel circuit?
Circuit with more than one loop.
If 1 component breaks, current can still flow.
Individual lamps can/cannot be switched on in a parallel circuit.
Can.
What is current (I) measured in?
Amperes (A).
What equipment is used to measure amperes?
Ammeter.
What is current?
Rate at which charge flows in a circuit.
What is current strength?
How much charge is flowing through a point in the circuit per second.
What is potential difference?
The energy required between 2 points in a circuit.
What is voltage measured in?
Volts (V).
What equipment is used to measure volts?
Voltmeter.
An ammeter is placed in/around a component in the circuit.
In.
A voltmeter is placed in/around a component in the circuit.
Around a component.
In what direction does conventional current flow?
Positive to negative.
In what direction does electron flow flow?
Negative to positive.
