Unit 6: Electricty Flashcards
What is an electrically conductive material?
An electrically conductive material is a material that allows the displacement of electrons. The conductive materials have weak attraction force.
Examples of conducting materials
Metals such as gold, silver and copper.
What are electrically insulative materials?
An electrically insulative material is a material that does not allow the displacement of electrons. The insulative materials have strong attraction force.
Example of insulating materials
Wood, plastic and porcelain
What are generators?
Generators produce electrical charges that generate electrical current in a circuit
Type of generator
Batteries, batteries and alternators
What are safety elements?
They cut off the electric current in a circuit in the event of a overload or short circuit.
Types of safety elements
A fuse
What are conductors?
They carry electrial current to different elements in the circuit.
What are receivers?
They transform electrical energy into a different type of energy to procude a useful work.
Types of receivers
Resistors, light bulbs, motors and buzzers.
What are control elements?
Controls electric current through a circuit.
Types of control elements
Switches (singles and doubles), push buttoms and selectro switches.
What are the three electrical magnitudes?
Voltage/Tenson/Potencial differece, electric current and electricala resistance.
What is the voltage?
The voltage, also known as tension or potential difference, is the difference in electrical charges between two points.
It is represented with V.
It is measured in volts (V)
What is electrical current?
Is the number of protons flowing through a conductor.
It is represented with I.
It is measured in amperes (A)
What is electrical resistance?
Position of current flow through a circuit.
It is represented with R
It is measured in ohms (Ω)
How to calculate electrical current?
I=V/R
How to calculate voltage?
V=IR
How to calculate resistance?
R=V/I
