A 20 V supply feeds a node through 500 Ω. An ideal 10 V Zener and 1 kΩ load are in parallel to ground. Which is correct?
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A 20 V supply feeds a node through 500 Ω. An ideal 10 V Zener and 1 kΩ load are in parallel to ground. Which is correct?

G1 Physics · Accepted Answer

Assuming regulation, I_S=(20−10)/500=20 mA and I_L=10/1000=10 mA. Thus I_Z=10 mA>0, confirming Zener ON.