Four diode circuits X, Y, Z and W are shown. Which pairs of diodes are forward biased?
Options

Question

Four diode circuits X, Y, Z and W are shown. Which pairs of diodes are forward biased?

G1 Physics · Accepted Answer

A diode is forward-biased when its anode potential is above its cathode potential. Inspecting each source orientation and terminal voltage, circuits Y and W meet this requirement. Final answer: Option B.