Which point on Figure E5-1 best represents the impedance of a series circuit consisting of a 400-ohm resistor and a 38-picofarad capacitor at 14 MHz?
AnswerPoint 4
At 14 MHz, a 38-picofarad capacitor has about 299 ohms of capacitive reactance. The impedance is therefore about 400 - j299 ohms, which corresponds to Point 4 on Figure E5-1.