Advertisements
Advertisements
प्रश्न
What is the ratio of inductive and capacitive reactance in an ac circuit?
विकल्प
ω2LC
LC2
`(LC)/omega^2`
`omega^2L`
Advertisements
उत्तर
ω2LC
Explanation:
Inductive reactance, XL = ωL
Capacitive reactance, `X_C = 1/(omegaC)`
Therefore, `X_L/X_C = (omegaL)/((1"/"omegaC))`
= `omega^2LC`
APPEARS IN
संबंधित प्रश्न
An inductor-coil, a capacitor and an AC source of rms voltage 24 V are connected in series. When the frequency of the source is varied, a maximum rms current of 6.0 A is observed. If this inductor coil is connected to a battery of emf 12 V and internal resistance 4.0 Ω, what will be the current?
Show that in an AC circuit containing a pure inductor, the voltage is ahead of current by π/2 in phase.
Obtain if the circuit is connected to a high-frequency supply (240 V, 10 kHz). Hence, explain the statement that at very high frequency, an inductor in a circuit nearly amounts to an open circuit. How does an inductor behave in a dc circuit after the steady state?
An applied voltage signal consists of a superposition of a dc voltage and an ac voltage of high frequency. The circuit consists of an inductor and a capacitor in series. Show that the dc signal will appear across C and the ac signal across L.
If circuit containing inductance only, the current ______.
If the frequency of an A.C. is made 4 times of its initial value, the inductive reactance will ______.
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:
An electrical device draws 2kW power from AC mains (voltage 223V (rms) = `sqrt(50,000)` V). The current differs (lags) in phase by `phi(tan phi = (-3)/4)` as compared to voltage. Find (i) R, (ii) XC – XL, and (iii) IM. Another device has twice the values for R, XC and XL. How are the answers affected?
An ideal inductor is connected across an AC source of voltage. The current in the circuit ______.
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance ______.
