In the figure shown below-The amplifier should have an input resistance of 50 - and must provide a gain of 10- The value of RD for amplifier is -

|A_V| = |g_mR_D| Since the configuration is CG nbsp; configuration, The input resistance, nbsp; R_in = 1/gm ⇒ nbsp;1/g_m = 50 A_V = 1/50× R_D 10=1/50 ...

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Standard XII

Physics

Transistor: Working

In the figure...

Question

In the figure shown below,

The amplifier should have an input resistance of 50 $Ω$ and must provide a gain of 10. The value of $R_{D}$ for amplifier is___ $Ω$
500

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Solution

The correct option is A 500
$| A_{V} | = | g_{m} R_{D} |$

Since the configuration is CG configuration,

The input resistance, $R_{i n} = \frac{1}{g m}$

$\Rightarrow \frac{1}{g_{m}} = 50$

$A_{V} = \frac{1}{50} \times R_{D}$

$10 = \frac{1}{50} \times R_{D}$

$R_{D} = 500 Ω$

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In the figure shown below, The amplifier should have an input resistance of 50 Ω and must provide a gain of 10. The value of RD for amplifier is___ Ω 500

The correct option is A 500|AV|=|gmRD| Since the configuration is CG configuration, The input resistance, Rin=1gm ⇒1gm=50 AV=150×RD 10=150×RD RD=500Ω

In the figure shown below,

The amplifier should have an input resistance of 50 $Ω$ and must provide a gain of 10. The value of $R_{D}$ for amplifier is___ $Ω$
500

The correct option is A 500
$| A_{V} | = | g_{m} R_{D} |$

Since the configuration is CG configuration,

The input resistance, $R_{i n} = \frac{1}{g m}$

$\Rightarrow \frac{1}{g_{m}} = 50$

$A_{V} = \frac{1}{50} \times R_{D}$

$10 = \frac{1}{50} \times R_{D}$

$R_{D} = 500 Ω$