If the amplification factor of a triode $(\mu)$ is 22 and its plate resistance is $6600 ohm$, then the mutual conductance of this valve is mho is
  • A$\frac{1}{300}$
  • B$25 \times 10^{-2}$
  • C$2.5 \times 10^{-2}$
  • D$0.25 \times 10^{-2}$
[MP PMT 1989]
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