Q4. The BJT in the common-base (CB) amplifier in Figure 4 has +12 V Figure 4 B= 100, V =0.7 v. in the active mode. The coupling capacitors are very large. The output resistance r, of the transistor can be neglected. 20 kn (a) For I = 1.2 mA, calculate the bias values of the collector voltage Ve and the emitter voltage Vg (b) Calculate the small-signal parameters (gm, ) and draw the small-signal equivalent circuit of the amplifier. Cel 0.5 k2 VE (c) Find the overall voltage gain G, defined as G, %3D sig

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Coulomb’s Law

Coulomb's law states that the attraction or repulsion force between two charged things is proportional to the product of their charges and inversely proportional to the square of their distance. It has an effect along the line that connects the two-point charges.