Share Technology 2ESO: Electricity
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What is electric current?
A flow of electrons from one atom to another
How do you call the current produced when electrons always move in the same direction inside an electric circuit?
direct current
How do you call an electrical current which value and direction vary cyclically within a circuit?
Alternating current
Which current is used by the devices powered by batteries or cells?
Direct current
Which current is used by the devices plugged into an electricity network?
alternating current
What is the voltage of the alternating current in Spain?
230V
What is the name of a series of interconnected components that an electric current flows through to produce en effect (e.g. light, heat, sound, movement)
electric curcuit
What is the name for the amount of electrons that flow through a wire over a certain time?
current
What is another word for voltage?
potential difference
What is the unit of measurement of the current
A, or ampere
How do you call the difference in electrical energy between two points?
Voltage
What is the opposition to the flow of the electric current?
Resistance
What is the unit of measurement of voltage
V or volt
What is the unit of measurement of resistance?
Ohm
Can you formulate the Ohm's law?
The current going through a conductor between two points is directly proportional to the voltage and inversely proportional to the resistance
What is a series circuit?
it is a circuit in which the resistors are connected one after another, so that electrical current flows through all the load devices
