Answer:
A signal is an electromagnetic or electrical current that is used for carrying data from one system or network to another. The signal is a function that conveys information about a phenomenon.
In electronics and telecommunications, it refers to any time-varying voltage that is an electromagnetic wave which carries information. A signal can also be defined as an observable change in quality such as quantity
Explanation:
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The correct answer is TRUE. <span>Interrogative techniques generally i</span><span>nvolve asking multiple what, where, who, when, why, and how questions in order to uncover the information the investigator is looking for. This techniques are particularly used in law enforcement when querying suspects of crime.</span>