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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
The variation of anode current in a triode corresponding to a change in grid potential at three different values of the plate potential is shown in the diagram. The mutual conductance of the triode is.........$ m mho$
  • ✓
    $2.5$
  • B
    $5$
  • C
    $7.5$
  • D
    $10$
✓

Answer

Correct option: A.
$2.5$
a
(a)${g_m} = \frac{{\Delta {i_p}}}{{\Delta {V_g}}} = \frac{{(20 - 15) \times {{10}^{ - 3}}}}{{(4 - 2)}} = 2.5\,milli\,mho$

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