-Refer to the figure above. The bandwidth of this amplifier is
A)the lower frequency times 0.707.
B)the difference between the upper and lower frequencies.
C)the sum of the upper and lower frequencies.
D)the upper frequency divided by 0.707.

Question

-Refer to the figure above. The bandwidth of this amplifier is
A)the lower frequency times 0.707. 
B)the difference between the upper and lower frequencies. 
C)the sum of the upper and lower frequencies. 
D)the upper frequency divided by 0.707.

Quizplus · Accepted Answer

The bandwidth of an amplifier is defined as the difference between the upper and lower frequencies at which the amplifier's gain falls to a specific level (commonly -3dB, or 0.707 of the maximum gain), not the sum, product, or division of these frequencies.

-Refer to the Figure Above