The reactance of a 0.1 H inductor at 50 Hz is about:
The reactance of a 0.1 H inductor at 50 Hz is about:
The reactance of a 100 μF capacitor at 50 Hz is about:
In a purely inductive AC circuit, the current:
In a purely capacitive AC circuit, the current:
If the frequency of an AC supply is doubled, the inductive reactance of a coil and the capacitive reactance of a capacitor respectively:
A 30 Ω resistor and an inductor of reactance 40 Ω are connected in series to a 200 V (rms) AC supply. The rms current is:
A capacitor does not allow a steady direct current to pass because:
An 8 Ω resistor and a capacitor of reactance 6 Ω are connected in series. The impedance of the combination is:
In a series RL circuit, the resistance equals the inductive reactance. The phase angle between current and voltage is:
The SI unit of reactance is the:
A pure inductor of 0.2 H is connected to a 220 V (rms), 50 Hz supply. The rms current is about:
A coil draws a current of 2 A from a 10 V DC supply, and 1 A from a 10 V (rms), 50 Hz AC supply. Its inductance is about:
A 10 μF capacitor is connected to a 220 V (rms), 50 Hz supply. The rms current is about:
In a DC circuit in steady state, an ideal inductor and an ideal capacitor behave respectively as:
Find the reactance (in ohm) of an inductor of inductance (0.5/π) H at a frequency of 50 Hz.
Find the reactance (in ohm) of a capacitor of capacitance (100/π) μF at a frequency of 50 Hz.
A 6 Ω resistor and an inductor of reactance 8 Ω are in series across a 100 V (rms) AC supply. Find the rms current in ampere.
A 30 Ω resistor and a capacitor of reactance 40 Ω are in series across a 200 V (rms) AC supply. Find the rms voltage (in volt) across the capacitor.