Question

What is the bandwidth of a signal if the highest frequency is 5 kHz and the lowest frequency is 2 kHz?

• A. 3 kHz
• B. 5 kHz
• C. 7 kHz
• D. 10 kHz

Hint:

The bandwidth of a signal is the difference between the highest and lowest frequencies present in the signal.

Answer 1

The Correct Option is A

The bandwidth $B$ of a signal is the difference between the highest and lowest frequencies: \[ B = f_{\text{high}} - f_{\text{low}} \] Substituting the values: \[ B = 5 \, \text{kHz} - 2 \, \text{kHz} = 3 \, \text{kHz} \]