🔍 Key Concepts

• Forward bias vs reverse bias in a diode junction • How impedance/resistance changes when a diode is conducting • The relationship between current flow and circuit descriptions like open/short/low impedance

💭 Think About

• Think about what happens to current flow when a diode is forward biased: does it allow current easily, or restrict it strongly? • In a DC circuit, how would you describe a path that lets current flow easily: high impedance, low impedance, or open circuit? • Which of the choices best matches the condition of a component that is intentionally oriented to conduct current?

✅ Before You Answer

• Recall that forward bias means the diode is connected so it is intended to conduct in its normal direction. • Review the difference between high impedance and low impedance in terms of how much current flows for a given voltage. • Confirm what an open circuit means in practical terms: current flow vs no current flow.