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The value of power dissipated across the Zener diode Vz=15V connected in the circuit as shown in the figure is X×10−1 watt.The value of X, to the nearest integer, is…………….

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answer is 5.

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Detailed Solution

Current through 90Ω is iL=VZRL=1590=16AVoltage across 35Ω is VS=22-15=7VCurrent through 35Ω is iS=VSRS=735=15ACurrent through Zener diode= iZ=iS-iL=15−16=130APower =Vi =15130=0.5=5×10-1W

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The value of power dissipated across the Zener diode Vz=15V connected in the circuit as shown in the figure is X×10−1 watt.The value of X, to the nearest integer, is…………….