Testing and Troubleshooting

A certain amplifier has a voltage gain of 210. That gain expressed in decibels is 46.4 dB.

A True

B False

ANS:A - True

P = 20log(210),

=> 20log(3*70),

=> 20log3+20log70,

=> 20*.477+20*1.845,

=> 9.54+36.90,

=> 46.44.

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