MHT CET · Physics · Alternating Current
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
- A \(-1\)
- B zero
- C \(\infty\)
- D \(+1\)
Answer & Solution
Correct Answer
(C) \(\infty\)
Step-by-step Solution
Detailed explanation
Reactance with AC source: \( X_{AC} = \omega L = 2 \pi f L \) Reactance with DC source (f=0): \( X_{DC} = 2 \pi (0) L = 0 \)
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