TEJ2O1 - Unit Test Flashcards
Electricity
The flow of electrical charge or power, measured in amperes (A).
Voltage
A potential difference in energy between one point and another, measured in voltage (V).
Current
A flow of charged particles, such as electrons or ions, moving through an electrical conductor, measured as current (I).
Resistance
A measure of opposition to the flow of electric current, measured in Ohms (Ω).
Parallel circuit.
A circuit in which there are different paths for electrical current to flow through. By adding loads or resistors in a parallel circuit, the flow of current is increased.
Series circuit.
A circuit in which all current flows through the same path. By adding loads or resistors in a series circuit, the flow of current is decreased.
Resistor
Resisters oppose the flow of electrical current within a circuit. The amount of resistance a resistor can have can vary depending on the resistor. A resistor’s resistance can be found by the colored bands of a resistor.
Capacitor
A capacitor stores electric charge. It consists of two conductors separated by an insulator.
Potentiometer
A potentiometer has 3 contacts and is usually used to control voltage. It can be used to control resistance depending on which angle the potentiometer is turned.
Transistor
A transistor amplifies electric current and can be utilized with other electrical components to create an amplifier or switching circuit.
Diode
A device forcing electrical current to flow in one direction.
LED
A device forcing electrical current to flow in one direction while also emitting light from electricity.
Motor
A transducer converting electricity to kinetic energy or motion.
Push button
A push button changes whether current is flowing in a circuit. Pressing the button may either activate or turn off the circuit while it is pressed, depending on the type of button.
A wire
Connects components of an electrical circuit and passes electric current from one part to another.
