EXAMIANS
When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
YOUR ANSWER : ?
YOUR ANSWER : ?
Two inductors, L1 and L2, are in parallel. L1 has a value of 25 H and L2 a value of 50 H. The parallel combination is in series with L3, a 20 H coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
YOUR ANSWER : ?
A 320 H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value?
YOUR ANSWER : ?
The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
YOUR ANSWER : ?
The winding resistance of a coil can be increased by
YOUR ANSWER : ?
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
YOUR ANSWER : ?
An inductance of 0.08 μH is larger than
YOUR ANSWER : ?
An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is
YOUR ANSWER : ?
A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is
YOUR ANSWER : ?
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
YOUR ANSWER : ?