Electronic Devices Question 232

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

[CBSE PMT 1997]

Options:

A) 1.5 W

B) 5 W

C) 6.67 W

D) 200 W

Show Answer

Answer:

Correct Answer: B

Solution:

The current through circuit i=PV=100×1030.5=0.2A

voltage drop across resistance = 1.5 -0.5 = 1 V

Therefore R=10.2=5Ω .



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