First slide

P-N junction diode

Question

The resistance of the diode in the forward biased condition is 10 ohm and infinity in the reverse biased condition. The current in the given circuit is

Easy

A

20mA
B

40mA
C

50 mA
D

zero

Solution

total resistance of the circuit is 90+100=100 ohms
net potential difference is 2 volt
current = $\frac{2}{100} = 20 m A$

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