An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is 0 V 4 V 6 V 12 V TRUE ANSWER : ? YOUR ANSWER : ?
A 240 H inductor is equivalent to a 240 mH inductor 0.000240 mH inductor 0.240 mH inductor 240 H inductor TRUE ANSWER : ? YOUR ANSWER : ?
An inductance of 0.43 mH is smaller than 0.00043 H 43 μH 0.05 H 430 μH TRUE ANSWER : ? YOUR ANSWER : ?
A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is greater than 5 mH 9.9 mH or greater than 5 mH 9.9 mH less than 0.6 mH TRUE ANSWER : ? YOUR ANSWER : ?
An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is 10 mA 1 A 100 mA 1 mA TRUE ANSWER : ? YOUR ANSWER : ?
An inductance of 0.08 μH is larger than 0.0000008 H 0.000000008 H 0.00008 mH 0.000008 H TRUE 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 87 A 870 mA 337 mA 87 mA TRUE ANSWER : ? YOUR ANSWER : ?
The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 16 mV 2.5 mV 160 mV 1.6 mV TRUE ANSWER : ? 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? 48 s 0.48 μs 0.48 s 0.48 ms TRUE ANSWER : ? YOUR ANSWER : ?
The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately 2.2 μH 14 μH 155 μH 6.9 μH TRUE ANSWER : ? YOUR ANSWER : ?