MHT CET · Physics · Alternating Current
The inductive reactance of a coil is ' R ' \(\Omega\). If inductance of a coil is tripled and frequency of a.c supply is also tripled, then new inductive reactance will be
- A \(\frac{\mathrm{R}}{9}\)
- B \(\frac{\mathrm{R}}{3}\)
- C 3 R
- D 9 R
Answer & Solution
Correct Answer
(D) 9 R
Step-by-step Solution
Detailed explanation
Inductive reactance \(=\mathrm{X}_{\mathrm{L}}=\mathrm{R}=2 \pi \mathrm{fL}\)
If L and f both are tripled, the inductive reactance will become \(9 R\).
If L and f both are tripled, the inductive reactance will become \(9 R\).
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