Definitions
What word means: the energy generated by the forces of attraction or repulsion between charged particles
Electricity
Give an example of a power source
Cell, battery
What are the two types of resistors?
Fixed and Variable
What is the symbol for voltage?
V
What does "W" stand for?
Watts
What word means: the branch of physics that studies the control of the movement of electrons in semiconducting materials
Electronics
Give an example of a load device
motor, lamp, resistor, buzzer
How do we know the value of a resistor?
By the colored rings on it
What is the symbol for resistance?
R
What is resistance?
The variable that tells us the opposition to the flow of an electric current
What word means: the variable that tells us the difference in electrical energy per unit of charge between two points in a circuit
Voltage
Give an example of a control and protection device
push switch, one-way switch, two-way switch, relay, fuse
What is a resistor?
It limits the flow of electrical current through a circuit
What is the equation for Ohm's Law?
I = V / R
Joules
Current
In circuits that are composed of semiconducting materials, the two components are known as:
active and passive
Give an example of a variable resistor
Potentiometer, LDR, NTC thermistor, PTC thermistor
What is the symbol for current?
I
What is a LDR?
Light-dependent resistor
What word means: the variable that measures the energy consumed by a load device or delivered by a power source over a certain period
Electrical power
What are conducting materials?
They transmit electrical energy across the surface
What are the most common resistors made of?
Carbon
"Ampere" is the unit for what?
Current
Name 2 basic circuits
Series circuit, Parallel circuit, Series-parallel combinatio circuit