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Question: If the amplification factor of a triode (μ) is 22 and its plate resistance is 6600 ohm, then the mut...

If the amplification factor of a triode (μ) is 22 and its plate resistance is 6600 ohm, then the mutual conductance of this valve is mho is

A

1300\frac{1}{300}

B

25×10−225 \times 10^{- 2}

C

2.5×10−22.5 \times 10^{- 2}

D

0.25×10−20.25 \times 10^{- 2}

Answer

1300\frac{1}{300}

Explanation

Solution

μ=rp×gm⇒gm=μrp=226600=1300.\mu = r_{p} \times g_{m} \Rightarrow g_{m} = \frac{\mu}{r_{p}} = \frac{22}{6600} = \frac{1}{300}.