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JEE Main · 2021 · 22 Jul 2021 · Shift 2 · Semiconductors

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In a given circuit diagram, a 5 V zener diode along with a series resistance is connected across a 50 V power supply. The minimum value of the resistance required, if the maximum zener current is 90 mA be ______ .

Answer: 500

Solution

The zener diode maintains 5 V across it when in breakdown. The voltage across the series resistance is V. For maximum zener current mA A, assuming no load (all current through zener), the current through the resistance is also 0.09 A. Using Ohm's law: .

JEE Main · 2021 · 22 Jul 2021 · Shift 2 · Integer answer

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