Question

If the phasor diagram for a device connected to an AC supply is as shown in the figure, then which of the following statements is true?

Options

• When the frequency of the AC source is increased, then the impedance of the device decreases.

• This device behaves as a conducting wire when connected across a DC source.

• When the frequency of the AC source is decreased, then the impedance of the device decreases.

• This device stores energy in the form of magnetic potential energy.

Answer 1

When the frequency of the AC source is increased, then the impedance of the device decreases.

Explanation:

As in the phasor diagram, current leads the voltage, so the given appliance is a capacitor.