66. In a transistor, the base current is about …….. of emitter current.
(a) 25%
(b) 20%
(c) 35%
(d) 5%
67. At the base-emitter junction of a transistor, one finds ……..
(a) reverse bias
(b) a wide depletion layer
(c) low resistance
(d) none of the above
68. The input impedance of a transistor is ……
(a) high
(b) low
(c) very high
(d) almost zero
69. Most of the majority carriers from the emitter ………
(a) recombine in the base
(b) recombine in the emitter
(c) pass through the base region to the collector
(d) none of the above
70. The current IB is ……..
(a) electron current
(b) hole current
(c) donor ion current
(d) acceptor ion current
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