An Inductive Reactance function: 

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RRB ALP CBT 2 Electronic Mechanic Previous Paper: Held on 23 Jan 2019 Shift 1
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  1. opposes alternating current 
  2. opposes direct current 
  3. allows alternating current 
  4. allows alternating current and direct current. 

Answer (Detailed Solution Below)

Option 1 : opposes alternating current 
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Explanation:

Inductive Reactance: Inductive Reactance of a coil depends on the frequency of the applied voltage as reactance is directly proportional to frequency.

F1 Utkarsha 28.9.20 Pallavi D12

Inductive Reactance which is given the symbol XL, is the property in an AC circuit that opposes the change in the current.

  • The inductive reactance is given by
  • XL = 2π f L
  • XL is proportional to the frequency and current is inversely proportional to the reactance.
  • An inductor opposes the flow of alternating current through it by developing a back emf according to Lenz’s law. 
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