Final answer:
The bandwidth is defined as the difference between the high and low cut-off frequencies. It determines the range of frequencies that can be transmitted, received, or processed by a circuit or system.
Step-by-step explanation:
The difference between the high and low cut-off frequencies is known as the bandwidth. In the context of this question, the bandwidth refers to the range of frequencies over which a circuit or system operates effectively. It can be measured in hertz (Hz) or radians per second (rad/s).
The bandwidth is an important parameter as it determines the range of frequencies that can be transmitted, received, or processed by a circuit or system. For example, in a radio receiver, the bandwidth determines the range of frequencies that can be tuned and received.
The bandwidth can be calculated as the difference between the high cut-off frequency and the low cut-off frequency. It is often used in conjunction with other parameters, such as the quality factor (Q), to characterize the performance of a circuit or system.