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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

`200Omega`

B

`6.67 Omega`

C

`5Omega`

D

`1.5Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
Current `I = P/V=(100xx10^3)/(0.5)=2xx10^(-1)A`
Voltage across resistance R is
`V. = 1.5 -0.5 = 1` volt
Then , `R = (V.)/I=1/(2xx10^(-1))=5Omega`
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