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# What is the Voltage Gain?

Considering the red signal as the input voltage and the yellow signal as the output voltage

Update:

a. 2

b. 1

c. 0.5

d. 4

### 5 Answers

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- oldschoolLv 74 weeks agoBest answer
The peak to peak of the yellow is about 4.5 divisions and the red is about 2.2. 4.5/2.2 is about 2 so (a) is the correct choice.

- Robert JLv 74 weeks ago
The output (green) signal appears to be around twice the amplitude of the input (red) signal.

The only answer that fits is A for gain = 2.

Gain = output / input.

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- 4 weeks ago
Gain is the ratio of the output to the input. The gain of a voltage amplifier is the ratio of the output voltage to the input voltage. I think it is negative gain.

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What equation would you use?