Question 418: AC fundamentals

Question

The inductive reactance of a coil is R$$\Omega$$. If the inductance of a coil is doubled and frequency of a.c. supply is also doubled then the new inductive reactance will be

Accepted Answer

Inductive reactance = R = 2$$\pi$$fL
If L and f both are doubled, the inductive reactance will become 4R.

Answer

2R

Answer

8R

Answer

$$\mathrm{\frac{R}{2}}$$

Answer

4R

AC fundamentals

The inductive reactance of a coil is R$\Omega$. If the inductance of a coil is doubled and frequency of a.c. supply is also doubled then the new inductive reactance will be

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