In a series LCR-circuit, what is the value of power factor at resonacne?

In a series LCR circuit, V_L=V_C=V_R what is the value of power factor?

In a series LCR-circuit, what is the potential drop across resistance at resonance, when the operating is 220V?

In an LCR-series a.c. circuit, the current

In a series LCR circuit the voltage across an inductor, a capacitor and a resistor are 20V, 20V and 40V respectively. What is the phase difference between the applied voltage and the current in the circuit?

In a series LCR circuit the voltage across an inductor, a capacitor and a resistor are 30V, 30V and 60V respectively. What is the phase difference between the applied voltage and current in the circuit?

A series LCR circuit with R= 20 Omega ,L=1.5H and C = 35 muF is connected to a variable-frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

What is the power factor of an LCR series circuit at resonance?