Analog Electronics
Which is the pair of acceptor elements ?

 Phosphorous and aluminium
 Antimony and indium
 Gallium and boron
None of these

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Analog Electronics
Pinch-off voltage in a JFET is

 the gate to source voltage that gives unity drain current.
 the gate to source voltage that gives zero drain current.
 the drain voltage that gives zero drain current.
 the drain voltage that gives infinite drain current.

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