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Physics · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 1 · Q11
When the forward bias voltage in a semiconductor diode is changed from 0.8 V to 1.0 V, the forward current changes by 2.0 mA. The forward bias…
When the forward bias voltage in a semiconductor diode is changed from $\displaystyle 0.8$ V to $\displaystyle 1.0$ V, the forward current changes by $\displaystyle 2.0$ mA. The forward bias resistance of the diode will be :
Official answer
(C)
$\displaystyle 100 \Omega$
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CBSE Class 12 Physics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.