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In which of the following figures, is the p-n diode forward biased? (Recall)

• (a)Only (P), (Q) and (S)
• (b)Only (R)
• (c)Only (P) and (R)
• (d)Only (Q) and (S)

Answer

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From ISC 2026 Specimen Physics Paper 1, question 1(A)(v).