Componets (like speakers of light bulbs) are transducers
“Things that convert other forms of energy into electrical energy are often called sensors” and “things that convert electrical energy into other forms of energy are sometimes called actuators”
circuits move electricity through different components
Current - amperes/amps/A - the amount of electrical charge flowing past a specific piont in the circuit.
Voltage - volts/V - theb difference in the enregy between one point in the circuitb and another.
resistance - ohms/Ω - how much a component resists the flow of electrical energy