Idea Inductors Characteristics Combinations of Inductors In Series In Parallel Home work problem

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Session 16D: Focus
 Idea Inductors Characteristics
 Combinations of Inductors
◦ In Series
◦ In Parallel
 Home work problem

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Ideal Inductor Characteristics

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Ideal Inductor Characteristics
1. There is no voltage across an inductor if the
current through it is not changing with time. An
inductor is therefore a short circuit to dc.
2. A finite amount of energy can be stored in an
inductor even if the voltage across the inductor is
zero, such as when the current through it is
constant.

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Ideal Inductor Characteristics
3. It is impossible to change the current through an
inductor by a finite amount in zero time, for this
requires an infinite voltage across the inductor.
◦ An inductor resists an abrupt change in the current
through it in a manner analogous to the way a mass resists
an abrupt change in its velocity.
4. The inductor never dissipates energy, but only
stores it.
◦ Although this is true for the mathematical model, it is not
true for a physical inductor due to series resistances.

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Combinations of Inductors

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Inductors in Series

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Inductors in Parallel

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Problem 1
 Find the equivalent Inductor and Capacitor:

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Home Work: Problem 2
 Find the equivalent Capacitor: 3.18 μF

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Can this be Simplified?
 Can any of the L and C series or parallel combinations
be used to simplify this circuit?
No, it is not possible to use simple C or L combinations to find Equivalent
L and C here.

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Session 16D: Summary
 Idea Inductors Characteristics
 Combinations of Inductors
◦ In Series
◦ In Parallel
 Home work problem

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References
Ref 1 Ref 2