Q28 / 88 · NTA Abhyas (JEE Main) 2020 · Physics · Semiconductors

The forward-bias voltage of a diode is changed from 0.6 V to 0.7 V, the current changes from 5 mA to 15 mA. What is the value of the forward bias resistance?

Correct answer: 10

Solution

The forward biased resistance of a diode is

R=∆V∆I=0.7-0.615-5×10-3

R=0.110×10-3=10 Ω

Hence, the correct answer is 10.

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