c
\(\,{{\text{I}}_{\text{m}}}\,\, = \,\,\frac{{{V_m}}}{{{R_f}\,\, + \;{R_L}}}\,\, = \,\,\frac{{25}}{{\left( {10\,\, + \,\,1000} \right)}}\,\, = 24.75\,mA\)

\({I_{dc\,}} = \,\,\frac{{{I_m}}}{\pi }\,\,\frac{{24.75}}{{3.14}}\,\, = \,\,7.88\,\,mA\)

\({I_{ms}} = \,\,\frac{{{I_m}}}{2}\,\, = \,\,\frac{{24.75}}{2}\,\, = \,\,12.38\,mA\)

રિપલ ફેકટર \( = \,\,{\left[ {{{\left( {\frac{{{{\text{I}}_{{\text{ms}}}}}}{{{{\text{I}}_{ac}}}}} \right)}^2}\,\, - \,\,1} \right]^{\frac{1}{2}}}\,\, = \,\,\left[ {{{\left( {\frac{{12.38}}{{7.88}}} \right)}^2}\,\, - \,\,1} \right]\,\, = \,\,1.21\)