Which of the following is a function of an inductor?

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RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)
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  1. It opposes the flow of AC
  2. It allows the flow of current.
  3. It opposes the flow of DC.
  4. It opposes the flow of both AC and DC.

Answer (Detailed Solution Below)

Option 1 : It opposes the flow of AC
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Detailed Solution

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Inductor

An inductor is an electrical element that stores energy in form of a magnetic field.

The inductor does not allow AC to flow through it but does allow DC to flow through it.

The total flux linkage is proportional to the current flowing through the inductor.

ψ α I

where, L = Inductance

ψ = Flux likage

I = Current

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