Final answer:
Signals do not stay on until they're switched off. A signal is an electrical or electromagnetic form of communication, and it only exists as long as the input that generates it is active.
Step-by-step explanation:
Signals do not stay on until they're switched off. A signal is an electrical or electromagnetic form of communication, and it only exists as long as the input that generates it is active.
For example, when you press a button on a remote control to turn on the television, a signal is sent from the remote control to the television, activating it. The signal continues only until you release the button; when you release it, the signal stops, and the television turns off.
Therefore, the correct answer to the question is: No.