The relationship between voltage gain and power gain in decibels (dB) is defined by the formulas 20 Log(v2/v1) for voltage gain and 10 Log(p2/p1) for power gain. Voltage gain must be squared to convert it to power gain, which is why the logarithmic expression for voltage gain includes a factor of 2. This conversion assumes that the voltages are measured across the same impedance, ensuring comparability between gains. Understanding this relationship is crucial for accurate gain calculations in electrical engineering.
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