MHT CET · Physics · Alternating Current
The inductive reactance of coil is \(\mathrm{R}\). If the inductance of a coil is doubled and frequency of a.c. supply is also doubled then then new inductive reactance will
- A \(2 R\)
- B \(8 R\)
- C \(\frac{\mathrm{R}}{2}\)
- D \(4 R\)
Answer & Solution
Correct Answer
(D) \(4 R\)
Step-by-step Solution
Detailed explanation
Inductive reactance \(=\mathrm{R}=2 \pi \mathrm{fL}\)
If \(\mathrm{L}\) and \(\mathrm{f}\) both are doubled, the inductive reactance will become \(4 R\)
If \(\mathrm{L}\) and \(\mathrm{f}\) both are doubled, the inductive reactance will become \(4 R\)
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