A zener diode with \( 5 \, \text{V} \) zener voltage is used to regulate an unregulated dc voltage input of \( 25 \, \text{V} \). For a \( 400 \, \Omega \) resistor connected in series, the zener current is found to be \( 4 \) times load current. The load current \( (I_{L}) \) and load resistance \( (R_{L}) \) are:
