NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

A voltage doubles from 1.0 V to 2.0 V across the same impedance. The voltage-ratio change in decibels is closest to:

2 dB 3 dB 6 dB 10 dB

Correct Answer:

6 dB

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