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The mutual conductance of a triode value...

The mutual conductance of a triode value is `2.5 millimho`. Find the change in the plate current if the grid voltage is changed from `-2.0 V` to `4.5 V`.

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The mutual conductance of a triode value is
`g_m = [(Deltai_p)/(DeltaV_g)]_(DeltaV_p=0)`.
or, `Deltai_p = g_m DeltaV_g`
`=(2.5 xx 10^(-3) Omega^(-1)) xx (-4.5 V + 2.0 V)`.
`=-6.25 xx 10^(-3)` A`.
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