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Giancoli's Physics: Principles with Applications, 7th Edition

Molecules and Solids

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29-1 to 29-3: Molecular Bonds

29-4: Molecular Spectra

29-5: Bonding in Solids

5:20

2:09

0:42

29-7: Band Theory of Solids

29-8: Semiconductors and Doping

29-9: Diodes

29-10: Transistors

Problem 32

From Fig. 29–41, write an equation for the relationship between the base current ( $I_B$ ), the collector current ( $I_C$ ), and the emitter current ( $I_E$ ), not labeled in Fig. 29–41). Assume $i_B = i_C = 0$ .

An npn transistor used as an amplifier. I_B is the current produced by E_B (in the absence of a signal), i_B is the ac signal current (= change in I_B).

Figure 29-41 An npn transistor used as an amplifier.

I_B

is the current produced by

\xi_B

(in the absence of a signal),

i_B

is the ac signal current (= change in

I_B

I_B + I_C = I_E

Giancoli 7th Edition, Chapter 29, Problem 32 solution video poster

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From Fig. 29–41, write an equation for the relationship between the base current (IBI_BIB​), the collector current (ICI_CIC​), and the emitter current (IEI_EIE​), not labeled in Fig. 29–41). Assume iB=iC=0i_B = i_C = 0iB​=iC​=0.

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From Fig. 29–41, write an equation for the relationship between the base current ( $I_B$ ), the collector current ( $I_C$ ), and the emitter current ( $I_E$ ), not labeled in Fig. 29–41). Assume $i_B = i_C = 0$ .