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What is a signal?...

What is a signal?

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### Step-by-Step Solution 1. **Definition of a Signal**: A signal in electrical terms can be defined as an electric current or an electromagnetic field or wave that is used to convey data from one place to another. 2. **Purpose of a Signal**: Signals are essential for communication. For instance, when we communicate with someone in a different country, our voice cannot travel directly. Instead, we use signals to transmit our audio messages. ...
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