The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately 155 μH 6.9 μH 14 μH 2.2 μH TRUE ANSWER : ? YOUR ANSWER : ?
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field doubles is quartered does not change quadruples TRUE ANSWER : ? YOUR ANSWER : ?
Three 15 mH inductors are in series. The total inductance is 30 mH 15 mH 5 mH 45 mH 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 less than 0.6 mH greater than 5 mH 9.9 mH 9.9 mH or greater than 5 mH TRUE ANSWER : ? YOUR ANSWER : ?
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 6 V 12 V 0 V 4 V TRUE ANSWER : ? YOUR ANSWER : ?
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? 400 mA 91 mA 78 mA 57 mA TRUE ANSWER : ? 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 1.25 mV 180 mV 18 mV 1.8 mV TRUE ANSWER : ? YOUR ANSWER : ?
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current is decreased momentarily goes to zero is increased does not change TRUE ANSWER : ? YOUR ANSWER : ?
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is 5.5 mH less than 0.2 mH 55 mH less than 5.5 mH TRUE ANSWER : ? YOUR ANSWER : ?
An inductance of 0.43 mH is smaller than 43 μH 0.00043 H 0.05 H 430 μH TRUE ANSWER : ? YOUR ANSWER : ?