JEE Main 2016 · 10 Apr · Shift 1 · Physics Q30

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The ratio (R) of output resistance $r_0$ , and the input resistance $r_i$ in measurements of input and output characteristics of a transistor is typically in the range :

R\sim10^2-10^3

R\sim1-10

R\sim0.1-0.01

R\sim0.1-1.0

Answer and worked solution

Official answer: A

In common-emitter measurements the output resistance is typically tens of kΩ and the input resistance a few hundred Ω to about 1 kΩ, so the ratio is around $10^2$ - $10^3$ .

Topics:Transistors

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JEE Main 2016 · 10 Apr · Shift 1, Physics question 30