Advertisements
Advertisements
प्रश्न
Draw a graph to show variation of capacitive-reactance with frequency in an a.c. circuit.
Advertisements
उत्तर

where XC is the capacitive-reactance and v is the frequency in an a.c circuit.
APPEARS IN
संबंधित प्रश्न
Three capacitors of capacities 8 μF, 8 μF and 4 μF are connected in a series and potential difference of 120 volt is maintained across the combination. Calculate the charge on capacitor of capacity 4 μF.
A capacitor of capacitance 0.5 μF is connected to a source of alternating e.m.f. of frequency 100 Hz. What is the capacitive reactance? (Π = 3.142)
A light bulb and a solenoid are connected in series across an ac source of voltage. Explain, how the glow of the light bulb will be affected when an iron rod is inserted in the solenoid.
A light bulb is rated at 120 W for a 220 V a.c. supply. Calculate the resistance of the bulb.
Which of the following plots may represent the reactance of a series LC combination?

The reactance of a circuit is zero. It is possible that the circuit contains
(a) an inductor and a capacitor
(b) an inductor but no capacitor
(c) a capacitor but no inductor
(d) neither an inductor nor a capacitor
The potential difference across the resistor is 160 V and that across the inductor is 120 V. Find the effective value of the applied voltage. If the effective current in the circuit is 1⋅0 A, calculate the total impedance of the circuit.

In a pure capacitive circuit if the frequency of ac source is doubled, then its capacitive reactance will be ______.
Which of the following graphs represents the correct variation of capacitive reactance Xc with frequency v u?
