91. What occurs when a conduction-band electron loses energy and falls back into a hole in the valence band?
(a) doping
(b) recombination
(c)
(d)
92. As the forward current through a silicon diode increases, the voltage across the diode
(a) increases to a 0.7 V maximum.
(b) decreases.
(c) is relatively constant.
(d) decreases and then increases.
93. As the forward current through a silicon diode increases, the internal resistance
(a) increases.
(b) decreases.
(c)
(d)
94. You have an unknown type of diode in a circuit. You measure the voltage across it and find it to be 0.3 V. The diode might be
(a) a silicon diode.
(b) a germanium diode.
(c) a forward-biased silicon diode.
(d) a reverse-biased germanium diode.
95. The wide end arrow on a schematic indicates the ________ of a diode.
(a) ground
(b) direction of electron flow
(c) cathode
(d) anode
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