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

The diode used in the circuit shown in the 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 resistor R, connected in series with diode, for obtaining maximum current ?

Text Solution

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Current through diode (or circuit) I= `("Power")/("Voltage")`
`:. I =(100xx10^(-3)W)/(0.5V) =0.2A`
And resistance `R=("Net voltage")/("Current") =(1.5-0.5)/(0.2) =5Omega`
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