TrueFalse 4. TrueFalse 3. TrueFalse N TrueFalse The Miller effect has useful applications because of capacitive reactances. D. it makes coupling capacitors appear smaller than they actually are. it creates additional gain without adding amplifiers. A. it creates a capacitor that is much larger than the feedback capacitor. Impedance matching in communication systems is used because it produces maximum power transfer. Decibel power gain is often used on data sheets to specify the power gain of devices.