1.

If \[{{R}_{p}}=7K\Omega ,\,{{g}_{m}}=2.5\] millimho, then on increasing plate voltage by \[50V\], how much the grid voltage is changed so that plate current remains the same           [RPET 1996]

A. ? 2.86 V
B. ? 4 V
C. + 4 V
D. + 2 V
Answer» B. ? 4 V


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