1.

When the frequency of the AC voltage applied to a series LCR circuit is gradually increased from a low value, the impedance of the circuit

Answer»

monotonically increases
first increases and then DECREASES
first decreases and then increases
monotonically decreases

Solution :From the GRAPH, we CONCLUDED that with the increase in frequency, the current increases, attains a maximum value `(f=f_(r ))` and then decreases. It implies that the impedance first decreases, becomes minimum for maximum value of current and the increases.


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