MHT CET 2026 Physics question
A coil has inductive reactance 3 H. The ratio of its reactance when it is first connected to an a.c. source and then to d.c.source is
Answer: (C)
Solution
The inductive reactance of a coil is . For an a.c. source of nonzero frequency the reactance has a finite value (here 3 units). For a d.c. source the frequency is , so : an ideal inductor offers no reactance to steady d.c. (only
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