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Question
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 = 2πf , where f is the frequency of the source. So, when f increases, ω increases.
∴ XL will increase and XC will decrease.
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