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Q#1 Diode and Its Applications GATE EE 2021 NAT +1 mark -0 marks

In the circuit shown, a 5V Zener diode is used to regulate the voltage across load . The input is an unregulated DC voltage with a minimum value of 6V and a maximum value of 8V. The value of  is 6Ω. The Zener diode has a maximum rated power dissipation of 2.5 W, Assuming the Zener diode to be ideal, the minimum value of  is ___________ Ω. 

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