At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is_____________?
A. 6.02 dB
B. -6.02 dB
C. 12.04 dB
D. -12.04 dB
A. 6.02 dB
B. -6.02 dB
C. 12.04 dB
D. -12.04 dB