Electricity Flashcards
(18 cards)
What are 2 types of electricity?
Static and Current
What is current?
An electrical energy that moves
What is static?
An electric energy that does not move
How does static occur?
When surfaces rub together
What is current electricity?
Movement of negatively charged electrons between two differently charged locations.
What is the symbol for current?
I
What is the units is current measured in?
Amps
What is a parallel circuit?
Is one that contains a point where the current can split or join.
What is a series circuit?
Components connected side by side so that the current goes through one and then the other. (a single path for the current to flow).
What is a voltage?
It shows the energy each electron receives from a power supply or transfers to a component.
What units is voltage measured in?
V
How is voltage measured?
By a device called a voltmeter.
What is a current?
An electric charge through a circuit.
What is resistance?
A measure of opposition to the flow of electrons (current).
What is the symbol for resistance?
R
What are the units for resistance?
Ohms (Ω)
What is ohms?
Is the unit that have low (conductors) or high resistance (insulators)
What is the Ohms Law?
V = IR
