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The grid voltage of any triode valve is ...

The grid voltage of any triode valve is changed from –1 volt to – 3 volt and the mutual conductance is `3xx10^(-4)mho` . The change in plate circuit current will be

A

`0.8 mA`

B

`0.6 mA`

C

`0.4 mA`

D

`1 mA`

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The correct Answer is:
B
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