When a transistor amplifier is operating, the current in any branch is _______________?
Correct answer: A. Sum of a.c. and d.c.
- A. Sum of a.c. and d.c.
- B. c. only
- C. c. only
- D. difference of a.c. and d.c.
Explanation
The instantaneous current in a transistor branch is the sum of its steady DC component and the varying AC component: i = I_DC + i_ac. The AC component represents the signal variation around the bias current.
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