When the Volume Control on a Stereo System Is Increased

question 51

Multiple Choice

When the volume control on a stereo system is increased, the voltage across a loudspeaker changes from V ₁ to V ₂ , and the decibel increase is given by Find the decibel increase if the voltage changes from 1.7 volts to 4 volts.

• A)db = 17.1
• B)db = 6.3
• C)db = 11.2
• D)db = 7.4
• E)db = 9.7

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