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Ratio of a coil's reactance on an a.c. source to that on a d.c. source

The same question, asked 3 times: 15 May 2023 S2*, 22 Apr 2025 S2*, 15 Apr 2026 S1. Every wording below, oldest first.

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  1. Question 1

    15 May 2023 S2

    9
    A coil has inductance HH. The ratio of its reactance when it is connected first to an a.c. source and then to d.c. source is

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  2. Question 2

    22 Apr 2025 S2

    45
    A coil has inductance 2 H . The ratio of its reactance when it is connected first to an a.c. source and then to a d.c. source is

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  3. Question 3

    15 Apr 2026 S1

    139
    A coil has inductive reactance 33 H. The ratio of its reactance when it is first connected to an a.c. source and then to d.c. source is

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