Electricity Flashcards
What does current measure?
The amount of charge flowing around the circuit.
What is current measured using?
Ammeter
What is resistance?
Something that robs moving charges of energy and converts it into heat and light.
What are electric fields?
Invisible forcefields around a charge.
What is voltage measured using?
Voltmeter
4 basic parts of a simple circuit
Energy source- battery, power point or power pack
Conductor- wires
Switch
Resistance- globe or motor
Examples of static electricity
Lighting and thunder
Van de Graaff generator
Carpet static
Examples of conductors and insulators
Conductors- metal
Insulators- plastic and rubber
What does voltage measure?
The measure of energy available to push charges around the circuit.
AC/DC
Alternating current- power points
Direct current- power packs or batteries
What positives are there to static electricity?
Car painting
Dust removal
Protons
Positively charged
Located in nucleus
Electrons
Negatively charged
Travel around nucleus
Neutrons
Neutral
Located in nucleus
Why do scientists use electric field lines to represent an electric field?
They show which direction a positive charge would move if it was placed into an electrostatic field.
