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 VL = VR VL > VR VR ≥ VL VL < VR TRUE ANSWER : ? YOUR ANSWER : ?
The voltage across a coil when di/dt = 20 mA/s and L = 8 H is 160 mV 1.6 mV 2.5 mV 16 mV TRUE ANSWER : ? YOUR ANSWER : ?
An inductance of 0.43 mH is smaller than 0.00043 H 43 μH 430 μH 0.05 H 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 quadruples does not change 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 0 V 12 V 6 V 4 V 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 less than 0.2 mH 5.5 mH less than 5.5 mH 55 mH TRUE ANSWER : ? YOUR ANSWER : ?
When the current through an inductor decreases, the amount of energy stored in the electromagnetic field increases remains the same doubles decreases TRUE ANSWER : ? YOUR ANSWER : ?
A 240 H inductor is equivalent to a 0.000240 mH inductor 240 mH inductor 0.240 mH inductor 240 H inductor 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 100 mA 1 mA 1 A 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? 0.48 ms 0.48 s 48 s 0.48 μs TRUE ANSWER : ? YOUR ANSWER : ?