Electricity Flashcards
What is meant by a “Electrical conductor”?
A material that lets current flow easily through it.
What is meant by an “Electrical insulator”?
A material that does not let current flow easily through it.
What is meant by “Voltage”?
The amount of energy supplied tothe charges passing through the cell.
What is meant by “Electrical current”?
The amount of charge flowing past a point in one second.
What is meant by “Resistance”?
The opposition to current flow in a cicuit.
What is the function of a Cell or Battery in an electrical circuit?
To provide electrical energy to the circuit.
What is the function of a Bulb or Lamp in an electrical circuit?
To convert electrical energy into light energy.
What is the function of an L.E.D. in an electrical circuit?
To convert electrical energy into light energy.
What does a Voltmeter measure?
Voltage
What does an Ammeter measure?
Electrical Current
What is meant by a “Series” circuit?
Circuit with one path for the current to flow through.
What is meant by a “Parallel” circuit?
Circuit with two or more branching paths for the current to flow through.
What is the rule for series voltage?
In a series circuit, the voltage across each component adds to the supply voltage.
What is the rule for series current?
In a series circuit, the current is the same at all points.
What is the rule for parallel voltage?
In a parallel circuit, the voltage across each branch is equal to the supply voltage.
What is the rule for parallel current?
In a parallel circuit, the current through each branch adds to the supply current.
