हिंदी

Choose the Correct Answer from Given Options the Phase Difference Between the Current and the Voltage in Series Lcr Circuit at Resonance is - Physics

Advertisements
Advertisements

प्रश्न

Choose the correct answer from given options
The phase difference between the current and the voltage in series LCR circuit at resonance is

विकल्प

  • π

  • π/2

  • π/3

  • zero

MCQ
Advertisements

उत्तर

At resonance the circuit is purely resistive and there is no phase difference between current and voltage.
Hence, the correct answer is option zero.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2019-2020 (March) Delhi Set 2

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Define 'quality factor' of resonance in a series LCR circuit. What is its SI unit?


A coil of resistance 40 Ω is connected across a 4.0 V battery. 0.10 s after the battery is connected, the current in the coil is 63 mA. Find the inductance of the coil.


An inductor-coil of inductance 17 mH is constructed from a copper wire of length 100 m and cross-sectional area 1 mm2. Calculate the time constant of the circuit if this inductor is joined across an ideal battery. The resistivity of copper = 1.7 × 10−8 Ω-m.


The current in a discharging LR circuit without the battery drops from 2.0 A to 1.0 A in 0.10 s. (a) Find the time constant of the circuit. (b) If the inductance of the circuit 4.0 H, what is its resistance?


Consider the circuit shown in figure. (a) Find the current through the battery a long time after the switch S is closed. (b) Suppose the switch is again opened at t = 0. What is the time constant of the discharging circuit? (c) Find the current through the inductor after one time constant.


In a series, LCR circuit, obtain an expression for the resonant frequency.


Figure shows a series LCR circuit connected to a variable frequency 230 V source. L = 5.0 H, C = 80 µF, R = 40 Ω.

  1. Determine the source frequency which drives the circuit in resonance.
  2. Obtain the impedance of the circuit and the amplitude of current at the resonating frequency.
  3. Determine the rms potential drops across the three elements of the circuit. Show that the potential drop across the LC combination is zero at the resonating frequency.

If the rms current in a 50 Hz ac circuit is 5 A, the value of the current 1/300 seconds after its value becomes zero is ______.


A series LCR circuit containing a resistance of 120 Ω has angular resonance frequency 4 × 105 rad s-1. At resonance the voltage across resistance and inductance are 60 V and 40 V respectively. At what frequency the current in the circuit lags the voltage by 45°. Give answer in ______ × 105 rad s-1.


A resistance of 200Ω and an inductor of \[\frac {1}{2π}\]Н are connected in series to a.c. voltage of 40 V and 100 Hz frequency. The phase angle between the voltage and current is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×