Question 314: AC fundamentals

Question

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

Accepted Answer

Inductive reactance $=\mathrm{X}_{\mathrm{L}}=\mathrm{R}=2 \pi \mathrm{fL}$
If $L$ and $f$ both are tripled, the inductive reactance will become 9R.

Answer

$\frac{\mathrm{R}}{9}$

Answer

$\frac{\mathrm{R}}{3}$

Answer

$\mathrm{3 R}$

Answer

$\mathrm{9 R}$

AC fundamentals

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

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