When evaluating a functional amplifier, you...

When evaluating a functional amplifier, you...

Question 1 of 27070

Q

When evaluating a functional amplifier, you measure an output of 30 volts. If the voltage gain of the amplifier is 2, what must the input voltage be for the amplifier to work properly?

A

32 volts

B

30 volts

C

28 volts

D

15 volts

Question 1 / 270705eccefa5bacbc34ba4d486b5

Question 1 of 270705eccefa5bacbc34ba4d486b5

When evaluating a functional amplifier, you measure an output of 30 volts. If the voltage gain of the amplifier is 2, what must the input voltage be for the amplifier to work properly?

Question 1 of 27070

Study area:

Study area:

Q

When evaluating a functional amplifier, you measure an output of 30 volts. If the voltage gain of the amplifier is 2, what must the input voltage be for the amplifier to work properly?

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🔍 Key Concepts

• Voltage gain definition (output vs. input) • Basic formula: Gain = Output Voltage / Input Voltage • How to rearrange the formula to solve for the unknown

💭 Think About

• If gain tells you how many times bigger the output is than the input, how can you express output in terms of input? • Once you have the formula with output and gain, how do you solve it to isolate the input voltage? • After you get the input value, which of the answer choices exactly matches it?

✅ Before You Answer

• Be clear whether gain multiplies the input or adds to it (it’s not addition). • Double-check your algebra when rearranging the gain formula. • Verify that your final input voltage, when multiplied by the given gain, gives the stated 30 V output.