A second condition for oscillations is____________?

A second condition for oscillations is____________?

A. A gain of 1 around the feedback loop
B. No gain around the feedback loop
C. The attention of the feedback circuit must be one-third
D. The feedback circuit must be capacitive

The piezoelectric effect in a crystal is___________?

The piezoelectric effect in a crystal is___________?

A. A voltage developed because of mechanical stress
B. A change in resistance because of temperature
C. A change in frequency because of temperature
D. None of the above

There is a total of 800 mA of current into four parallel resistors. The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is______________?

There is a total of 800 mA of current into four parallel resistors. The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is______________?

A. 490 mA
B. 800 mA
C. 310 mA
D. 0 A