Electrical Engineering - Inductors
Exercise : Inductors - General Questions
- Inductors - General Questions
- Inductors - True or False
16.
Three 15 mH inductors are in series. The total inductance is
17.
An 18 V power supply is connected across a coil with a winding resistance of 180 
. Current flow in the coil is
. Current flow in the coil is18.
A switch, a 220 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?
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?19.
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?
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 s
0.48 ms
0.48 s
s48 s
20.
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
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