Derive the equation for = (). (Assume that the transistor in active region.) (b) Find the voltage range that keeps the transistor in active region. Assume = 150, cc = 1 , = 30 . (c) Draw the small signal model and find the small signal voltage gain in terms of , cc, and . (d) Find the expressions for input and output resistances.

The answer to your is is c motion and shape

Some type of thing that was invisible

If football was tossed in air without gravity or friction the ball would go into space

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.