In an alternating current circuit consisting of elements in series, the current increases on increasing the frequency of supply. Which of the following elements are likely to consitute the circuit ?

Options

A. Only resistor
B. Resistor and an inductor
C. Resistor and a capacitor
D. Only a capacitor.

Answer

C, D

Explanation

The reactance of a capacitor is `X_(C ) = (1)/(omega C) = (1)/(2 pi v C)` On increasing the frequency v, `X_(C )` decreases. Therefore, current increases. As R does not vary with frequency, therefore, likely elements consituting the circuit may be capacitor only or capacitor and a resistor. Choice (c ) and (d) are correcet