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What is the primary function of a feedback resistor in an operational amplifier

Practice Questions

Q1
What is the primary function of a feedback resistor in an operational amplifier circuit?
  1. To increase gain
  2. To stabilize the output
  3. To limit current
  4. To reduce noise

Questions & Step-by-Step Solutions

What is the primary function of a feedback resistor in an operational amplifier circuit?
  • Step 1: Understand that an operational amplifier (op-amp) is a device that amplifies voltage signals.
  • Step 2: Know that gain is how much the op-amp increases the input signal.
  • Step 3: Learn that a feedback resistor is a resistor connected from the output of the op-amp back to its input.
  • Step 4: Realize that the feedback resistor helps control how much of the output signal is fed back to the input.
  • Step 5: Understand that by changing the value of the feedback resistor, you can set the gain of the op-amp to a desired level.
  • Step 6: Conclude that the primary function of the feedback resistor is to set the gain of the operational amplifier.
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