Curioustab

Home » Electrical Engineering » Inductors

Two inductors, L1 and L2, are in parallel. L1 has a value of 25 µH and L2 a value of 50 µH. The parallel combination is in series with L3, a 20 µH coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is

87 mA
870 mA
87 A
337 mA

Correct Answer: 870 mA

← Previous Question Next Question→

More Questions from Inductors

Three 15 mH inductors are in series. The total inductance is
The following coils are in parallel: 75 µH, 40 µH, 25 µH, and 15 µH. The total inductance is approximately
A switch, a 220 Ω resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed?
An 18 V power supply is connected across a coil with a winding resistance of 180 Ω. Current flow in the coil is
A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is
When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
An inductor, a 1 kΩ resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is
An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then
A 240 µH inductor is equivalent to a
Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion