Define current amplification factor `α_(DC)` and `β_(DC)` Obtain the relation between them.

Define current amplification factor in a common emitter mode of transistor.

For a transistor in common emitter configuration, the current amplification factor is 4 . If the transistor is connected in the common base connected and change in emitter current be 6 m A , then the collector current will be

Define surface tension and surface energy. Obtain a relation between them.

In the above problem the current amplification factor beta is

Define coefficient of friction and angle of friction and hence derive a relation between them.

Define the term 'drift velocity' of electrons in a current carrying conductor. Obtain the relationship between the current density and the drift velocity of electrons.

For a transistor, the current amplification factor is 4. when the transistor is connected in common emitter configuration, the change in collector current, when the base current changes by 6mA, is

The current amplification factor alpha of a common base transistor and the current amplification factor beta of a common emitter transistor are not related by