For an ideal diode, in forward and reverse biased condition the resistance is respectively (a) infinite, zero. (b) infinite, infinite. (c) zero, zero. (d) zero, infinite.

Answer: (d). An ideal diode acts as a closed switch in forward bias: Rf = 0. It acts as an open switch in reverse bias: Rr = ∞. So the answer is (d) zero, infinite.

For an ideal diode, in forward and reverse biased condition the… | MHT CET 2025 (20 Apr, Shift 1)

Q29MHT CET 2025 · 20 APR · SHIFT 1Easy

P-N Junction Diode

For an ideal diode, in forward and reverse biased condition the resistance is respectively

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Answer: (d)

An ideal diode acts as a closed switch in forward bias: $R_f = 0$ .
It acts as an open switch in reverse bias: $R_r = \infty$ .
So the answer is (d) zero, infinite.

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