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Elecrticity Aleco Bardo Juan Troyano, open and closed circuits,…
Elecrticity Aleco Bardo Juan Troyano
Electrical Energy
Atoms
Nucleons
Protons (positive charge)
Neutrons (neutral charge)
Electrons (negative charge)
The opposite charges attract each other and same charges reppel each other
Electric current
The electric current is the flow of elctrons
CONDUCTORS
Electricity current through them
Gold and Silver
Copper
Aluminium
short circuits
a circuit without a load device make electrons flow so fast and that make a short circuit, and it can get so dangerous
electrons go through easiest path
Types of circuits
Parallel
Series-parallel
characteristics of both
In a parallel circuit there are different branches and more than one possible path
Series
In a series circuit there is only one possible path and they are all conected to each other
electric circuits
Components
Power source
Cell
Supplies energy with negative and positive terminals
Battery
Grouped set of cells
Conductor
Wire (copper)
Electric current flows through them
Load device
LED lamp.
Electrical energy transforms into light energy
Motor
Electrical energy to kinetic energy
Buzzer
Electrical energy transforms into sound energy
Resistor
Opposes the flow of the electric current.
Control device
Switchers
Opens or closes the circuit when pressed
Electrical schematic
Ohm´s law
variables
Voltage (V)
Is the difference of charge between 2 points. Its measured in volts(V)
Resistance (R)
Is the opposition of the flow of the electric current. Its measured in Ohms(R)
Current (I)
Is the intensity of the current or the amount of electrons. Its measured in amperes(A)
equation
V = R · I
R = V : I
I = V : R
Converting elecrical energy
heat
resistor
light
lamp
sound
buzzer
motion
motor
Energy and the enviroment
enviromental impact
energy generated in power stations
power stations pollute while generating electrical energy
Responsible use
saving energy
save money
tips for responsible use
use low energy bulbs
use domestic appliances when they are full
replase old electrical appliances with more efficient and less consumer ones
switch off electronic equipmet while don´t using it
protect enviroment
tips for responsible use
open and closed circuits
open circuits
energy current can´t flow
closed circuits
energy current can flow
An open circuit can change to a closed circuit using a swither and opposite
INSULATORS
Electricity can't current through them
Wood
Plastic
Cardboard
Interconnected components that an electric current flows through.
