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Current Electricity Analysis

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Current Electricity Analysis Physics Alternating Current

A zener of breakdown voltage VZ = 8V and maximum zener current, IZM = 10mA is subjected to an input voltage Vi = 10V with series resistance R = 100 Ω  In the given circuit RL represents the variable load resistance. The ratio maximum and minimum value of RL is__________.

 
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alok kumar singh

Contributor-Level 10

Across zener diode & RL

8 = ILRL

8 =  (20−10)RL (max)

RLmax=810kΩ

At max current in loop (1)

10 = imax R + 8

imax = 2R=2100=0.02A

= 20 mA

RL (max) = 810kΩ

At minimum curre3nt through zener

imax RL (minimum) = 8

RL (minimum) = 820kΩ

RLmaxRLmin=2

 

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