9. A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A. 6 kHz
B. 18 kHz
C. 12 kHz
D. 0 Hz
9. A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
A. 6 kHz
B. 18 kHz
C. 12 kHz
D. 0 Hz