Question

An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance ‘R’ are connected in series to an ac source of potential difference ‘V’ volts as shown in figure. Potential difference across L, C and R is 40 V, 10 V and 40 V, respectively. The amplitude of current flowing through LCR series circuit is `10sqrt2` A. The impedance of the circuit is :

Options

• 4 Ω

• 5 Ω

• `4sqrt2 Ω`

• `5//sqrt2 Ω`

Answer 1

An inductor of inductance L, a capacitor of capacitance C, and a resistor of resistance ‘R’ are connected in series to an ac source of potential difference ‘V’ volts as shown in the figure. The potential difference across L, C, and R is 40 V, 10 V, and 40 V, respectively. The amplitude of the current flowing through the LCR series circuit is `10sqrt2` A. The impedance of the circuit is 5 Ω.