Semiconductors

The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.

For transistor action, which of the following statements is correct ?

For a p-type semiconductor, which of the following statements is true ?

In the circuit shown in the figure, the input voltage V\(_i\) is 20 V, V\(_{BE}\) = 0 and V\(_{CE}\) = 0. The values of I\(_B\), I\(_C\) and \(\beta\) are given by

In a common emitter transistor amplifier the audio signal voltage across the collector is 3 V. The resistance of collector is 3 k\(\Omega\). If current gain is 100 and the base resistance is 2 k\(\Omega\), the voltage and power gain of the amplifier is :

A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of 800 \(\Omega\) is connected in the collector circuit and the voltage drop across it is 0.8 V. If the current amplification factor is 0.96 and the input resistance of the circuit is 192 \(\Omega\), the voltage gain and the power gain of the amplifier will respectively be :

For CE transistor amplifier, the audio signal voltage across the collector resistance of 2 k\(\Omega\) is 4 V. If the current amplification factor of the transistor is 100 and the base resistance is 1 k\(\Omega\), then the input signal voltage is