A JFET has high input impedance because _________________?
Correct answer: B. input is reverse biased
- A. it is made of semiconductor material
- B. input is reverse biased
- C. of impurity atoms
- D. none of the above
Explanation
The JFET gate-channel junction is reverse biased, so it permits only a very small leakage current and therefore presents high input impedance. Semiconductor construction or impurity atoms alone do not explain this property.
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