The circuit diagram used to study the characteristic curve of a zener diode is connected to variable power supply (0-15 V) as shown in figure. A…

The circuit diagram used to study the characteristic curve of a zener diode is connected to variable power supply ($\displaystyle 0$-$\displaystyle 15$ V) as shown in figure. A zener diode with maximum potential $\displaystyle \mathrm{V}_z=10 \mathrm{~V}$ and maximum power dissipation of $\displaystyle 0.4$ W is connected across a potential divider arrangement. The value of resistance $\displaystyle \mathrm{R}_{\mathrm{P}}$ connected in series with the zener diode to protect it from the damage is \_\_\_\_ $\displaystyle \Omega$.