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Q.

A zener diode voltage regulator operated in the range 120 – 180V produces a constant supply of 110V and 250mA to the load. If the maximum current is to be equally shared between the load and zener then the values of series resistance (Rs) and load resistance (R2) are

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a

440Ω,140Ω

b

280Ω,70Ω

c

70Ω,280Ω

d

140Ω,440Ω

answer is B.

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Detailed Solution

VR=itotalRs

V0=Vz=izPz

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