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The diode used in the circuit shown in f...

The diode used in the circuit shown in figure has a constant voltage drop at 0.5 V at all currents and a maximum power rating of 100 mW. What should be the value of the resistance R, connected in series with diode for obtaining maximum current ?

A

`5Omega`

B

`5.6Omega`

C

`6.7Omega`

D

`20Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
V = E - IR = 1.5 - 0.5 = 1 volt.
Now `P=VI:.I=P/V=(100xx10^(-3))/1=1/10A`.
But `IR = 0.5 :. R=(0.5)/I=(0.5)/(1//10)=5Omega`
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