An inductor coil joined to a 4.5V battery draws a steady current of 13.5A. This coil is connected to a capacitor and an AC source of rms voltage 9V in series. If the current in the circuit is in phase with the emf, the rms current is
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An inductor coil joined to a 4.5V battery draws a steady current of 13.5A. This coil is connected to a capacitor and an AC source of rms voltage 9V in series. If the current in the circuit is in phase with the emf, the rms current is