A passive device disables the vehicle by making the fuel, ignition, or starting system inoperative. A disabling device is classified as passive if a separate manual step is not required to engage the device.
a passive circuit component has no emf. The term comes from the idea that it responds to something done to it by an active device, such as a battery. Light globes and capacitors are passive devices.
A discrete component that is not active, where an active component is one whose operation involves the activity of a semiconductor junction. Resistors and capacitors are examples of passive devices.