PR-1 An A.C. input voltage (Vᵢn) of peak value V_max = 20V is connected in series with a silicon diode (V_D = 0.7(V)) and load resistance of 500Ω. If the forward resistance (R_F) of the diode is ___.
a) 0.033Ω
b) 0.035Ω
c) 0.036Ω
d) 0.037Ω