Explain , why the input resistance of a transistor is low and output resistance is high.

Explain why the resistance of ammeter is kept low.

The current gain of a transistor in a common base arrangement is 0.95. Find the voltage gain and power gain if the load resistance of output circuit is 400kOmega and the input resistance is 200Omega.

Draw a simple circuit of a CE transistor amplifier. Explain its working. Show that the voltage gain, A_V of the amplifier is given by A_v = - ( beta_(ac) R_L )/(r_i) where beta_(Ac) is the current gain, R_L is the load resistance and r_1 is the input resistance of the transistor. What is the significance of the negative sign in the expression for the voltage gain?

Define input resistance of a transistor used in its common emitter configuration.

In a common base transistor amplifier, if the input resistance is 200 ohm and load resistance is 20 kiloohm, find power gain. Given current gain of common base trasistor is 0.95

In a common base transistor amplifier, if the input resistance is 200 ohm and load resistance is 20 kiloohm, find Voltage gain Given current gain of common base trasistor is 0.95

A common emitter circuit has an input resistance of 570 Omega and output resistance of 59 k Omega .If the current gain is 60, find the voltage gain andpower gain.

A common-emitter circuit has an input resistance of 0.6 k Omega and output resistance of 51kOmega . If the current gain is 64, find voltage gain and power gain.