WJEC GCSE Electronics operational amplifiers quiz quiz
14questions. Pick an answer and you'll see why right away.
What does an amplifier do to a signal?
How is voltage gain calculated?
What are the units of voltage gain?
An amplifier gives 2.0 V output for 20 mV input. The voltage gain is:
The bandwidth of an amplifier is:
What usually happens to the bandwidth if the gain is increased?
Clipping of an amplifier output means:
An operational amplifier on its own (no feedback) has a gain that is:
The gain of an inverting amplifier is:
An inverting amplifier has R_f = 100 kΩ and R_in = 20 kΩ. Its gain is:
The gain of a non-inverting amplifier is:
What does the negative sign in the inverting amplifier gain tell you?
A summing amplifier (mixer) produces an output that is:
In an amplifier system, what stage is needed just before the loudspeaker?