The inductive reactance of a coil is ' R ' $\Omega$. If inductance of a coil is tripled and frequency of a.c…
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
$\frac{\mathrm{R}}{9}$
$\frac{\mathrm{R}}{3}$
3 R
9 R
Solution
Inductive reactance $=\mathrm{X}_{\mathrm{L}}=\mathrm{R}=2 \pi \mathrm{fL}$
If L and f both are tripled, the inductive reactance will become $9 R$.