Operational Amplifiers Quiz

In which of the following are operational amplifiers (op-amps) used?

• Oscillators

• Filters

• Instrumentation circuits

• All of the above

This circuit is an example of a _____.

• single-ended input

• double-ended (differential) input

• double-ended output

• common-mode operation

This circuit is an example of a _____.

• single-ended input

• double-ended (differential) input

• double-ended output

• common-mode operation

This circuit is an example of a _____.

• single-ended input

• double-ended (differential) input

• double-ended output

• common-mode operation

This circuit is an example of a _____.

• single-ended input

• double-ended (differential) input

• double-ended output

• common-mode operation

In which of the following operations is the resulting output signal of the differential amplifier near zero?

• Single-ended

• Double-ended

• Common-mode

• None of the above

What is the level of the voltage between the input terminals of an op-amp?

• Virtually zero

• 5 V

• 18 V

• 22 V

What is the level of the current through the amplifier input(s) to ground in an op-amp?

• Virtually zero

• 1.7 mA

• 2.8 mA

• 3.3 mA

Calculate the overall voltage gain of the circuit if R1 = 100Ω and Rf = 1 kΩ.

• -1

• -10

• 11

• 9

Calculate the overall voltage gain of the circuit if R1 = 100 Ω and Rf = 1 kΩ.

• -11

• -10

• 11

• 9