b
\({\text{ }}\,{\text{Peak current }}\,{{\text{I}}_m}\,\, = \,\,\frac{{{{\text{V}}_{\text{m}}}}}{{{{\text{R}}_{\text{f}}}\,\, + \;\,{R_L}}}\,\,\therefore \,\,\,{{\text{I}}_{\text{m}}}\,\, = \,\,\frac{{{\text{30}}\,\,{\text{volts}}}}{{{\text{10}}\,\, + \;\,{\text{1500}}}}\,\, = \,\,{\text{19}}{\text{.9}}\,\,{\text{mA}}\,\,\)

\(d.c\) લોડ પ્રવાહ \({I_{dc}}\,\, = \,\,\frac{{{\text{2}}{{\text{I}}_m}}}{\pi }{\text{ }}\,\, = \,\,0.636\,\,{I_m}\,\, = 0.636\,\, \times \,\,19.9\,\,mA\,\, = 12.66{\text{ mA}}\)

\({{\text{I}}_{{\text{rms}}}}\,\, = \,\,\frac{{{{\text{1}}_{\text{m}}}}}{{\sqrt {\text{2}} }}\,\, = \,\,\frac{{{\text{19}}{\text{.9}}}}{{\sqrt {\text{2}} }}\,\, = \,\,{\text{14}}\,{\text{mA}}\)