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QJEEM22Ph434d: JEE Main 2022 Physics - Class 12 JEEM22Ph434d Solution: The circuit diagram used to study the characteristic curve of a …

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 zener diode with maximum potential V_z = 10 V and maximum power dissipation of 0.4 W is connected across a potential divider arrangement. The value of resistance R_P connected in series with the zener diode to protect it from the damage is ________________ $Ω$ .

JEE Main 2022 (Online) 30th June Morning Shift Physics - Semiconductor Question 69 English

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\mathrm{P}_{\mathrm{zm}}=\mathrm{I}_{\mathrm{zm}} \mathrm{V}_{z}

\begin{aligned} I_{ZM} = \frac{P_{z M}}{V_{z}} = \frac{0.4}{10} = 0.04 A \\ So, R_{P} = \frac{E_{max} - V_{z}}{I_{Z M}} = \frac{15 - 10}{0.04} = \frac{5}{0.04} = 125 Ω \end{aligned}

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