Chapter 19

2. An electric component installed in a circuit to lower voltage and current flow.
3. An electric device that automatically interrupts current via an internal metal element melting if a circuit is overloaded or a short occurs.
4. A semiconductor device that allows current flow in one direction, but resists it in the other.
6. An electric component that absorbs voltage spikes by storing electrons, or electrical energy, thus protecting other vehicle electrical equipment.
9. Any device that can emit or detect light.
10. An accidental grounding of an electrical circuit or electrical device, causing a tremendous amount of current through the circuit or device.
11. A finned metal part installed in electronics to transfer damaging heat away from delicate electronic components.
12. An electric device that automatically interrupts current via an internal switch tripping if a circuit is overloaded or a short occurs. It resets itself when circuit conditions return to normal.

1. An electric device consisting of an iron core inside a coil of wire. Applying electricity to the coil causes the iron core to center itself in the coil and, as a result, exert a force on the object to which it is connected.
2. A magnetically operated electric switch that enables low current in one circuit to control (close or open) a greater current flow in a second circuit.
3. A field of electronics in which light carries data through small strands of plastic or glass fiber. Also, refers to cable that has light-carrying strands of plastic or glass.
5. A material, such as silicon (often crystalline in structure), that acts as a conductor or insulator, depending on its operating condition and application.
7. A semiconductor device that can be used as an electronic signal switch or as a current amplifier.
8. A photonic semiconductor device that produces light when energized by an electric current.
10. An electric component used to connect or disconnect the power supply in a circuit.