# 6.6: Questions

- Page ID
- 26155

1. Is it safe to assume that the voltage across a Zener is always equal to the rated \(V_Z\)? Why/why not?

2. The instantaneous resistance (also known as AC resistance) of a diode may be approximated by taking the differences between adjacent current-voltage readings. That is, \(r_{diode} = \Delta V_{diode}/\Delta I_{diode}\). What is the smallest effective resistance of the Zener using Table 6.5.1 (show work)?

3. If the circuit of Figure 6.3.1 had been constructed with the Zener flipped, how would this effect the results recorded in Table 6.5.1?

4. Assume that a diode with a much higher \(I_{ZT}\) rating (say, 100 mA) was used in this exercise. In general, what would the likely outcome be for the circuit of Figure 6.3.2?