Physics - Semiconductors Question with Solution | TestHub

Compare each anode potential with its cathode potential. A positive difference means forward bias.

$V_A-V_C:$

$1:0-(+5)=-5\mathrm{V}\text{(reverse)}$

$2:+10-(+5)=+5\mathrm{V}\text{(forward)}$

$3:-10-0=-10\mathrm{V}\text{(reverse)}$

$4:-5-(-12)=+7\mathrm{V}\text{(forward)}$

$5:0-(-10)=+10\mathrm{V}\text{(forward)}$

Circuits 2, 4 and 5 are forward biased. Answer B.