#### Question

Which of the following plots may represent the reactance of a series LC combination?

#### Solution

(d)

The reactance of a series LC circuit is given by,

`X = X_L - X_c = omegaL - 1/"omegaC"`

⇒ `X =2pi fL - 1/(2pifC) `

The correct relation between the reactance and *f* is represented by the graph in option (d).

`X = 0, "when" X_L = X_c`

Thus plot d represent the reactance of a series LC combination.

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Solution Which of the Following Plots May Represent the Reactance of a Series Lc Combination? Concept: Reactance and Impedance.