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The circuit diagram used to study the characteristic curve of a zener diode is connected variable power supply (0-15 V) as shown in figure. A zener 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. [Figure: a supply E feeds a rheostat Rₕ used as a potential divider; the tapped voltage drives the Zener in reverse through R_P and a microammeter, with a voltmeter V_z across the Zener.]

Asked in JEE Main 30th June 1st Shift 2022 · Zener current and series resistance

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