MCQ

An inductor, a resistance and a capacitor are joined in series with an AC source. As the frequency of the source is slightly increased from a very low value, the reactance

#### Options

of the inductor increases

of the resistor increases

of the capacitor increases

of the circuit increases

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#### Solution

of the inductor increases

The reactance of an inductor is given by,

`X_L = omegaL`

And the reactance of a capacitor is given by,

`Xc = 1/(omegaC)`

Here, *ω* = 2π*f** *, where *f* is the frequency of the source. So, when *f* increases, *ω* increases.

∴ *X _{L}* will increase and

*X*will decrease.

_{C}Concept: Ac Voltage Applied to an Inductor

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