When the Volume Control on a Stereo System Is Increased

question 122

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 1.6 volts to 3.9 volts.

• A)db = 13.0
• B)db = 11.6
• C)db = 21.4
• D)db = 9.3
• E)db = 8.2

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